23 Annotation Tools & What To Use Them For

23 best annotation tools

Annotation tools are the answer to digitally editing and marking up PDFs, webpages, images, and almost any other content you can think of.

Even better, with such a wide range of annotation tools for users available, you are guaranteed to find one with the right features to meet your specific needs.

We will cover 23 annotation software options and explain why they are best suited to one of the following purposes:

  • Learning
  • Project Management
  • Collaboration
  • Business

By the end of this article, you will know which annotation tool is ideal for your context and its pricing options.

So let’s jump in and begin by explaining what an annotation tool is.

What Is An Annotation Tool?

As we’ve mentioned, the software enables users to change and add to digital content, including PDF documents, images, videos, webpages, etc.

There are both textual and visual annotation tools for users, meaning that some are designed for editing documents alone, while others can mark up image-based content, and some add text to video online. Some versions do all of it.

Each annotation tool has key features that make it more suitable for specific jobs. For example, suppose you are a student who has to work through readings in preparation for class. In that case, you’ll need a fantastic text tool that allows you to take notes on PDF documents, underline or highlight important passages, cross out sections, etc.

And if you want to make sure you choose the right annotation tool, it’s essential to understand what each one has been created for.

We will focus on learning, project management, collaboration, and business in categorizing the 23 annotation tools we rate most highly.

Quickly find the annotation software fit for your purposes below.

Annotation Tools For Learning

Teachers and students need annotation tools because they work with large amounts of content that vary greatly depending on the subject.

With the right annotation tools, students can study more effectively, while teachers can share content that includes questions, quizzes, or interactive media that allow students to engage in real time.

Additionally, if students are working on group projects, annotation software provides select tools that enable seamless team collaboration, which goes way beyond the abilities of Google Docs and Google Drive.

But with such an array of annotation tools, what are the best annotation software options for learning?


Hypothesis is an excellent annotation tool amongst teachers, students, or professors, as many of its features are engineered to make learning more accessible and organized.

It is a select tool for students and educators to fact-check various sources, fast-tracking the writing process for the former while simplifying the assessment process for the latter.

One can create groups that enable private team collaboration for students on different projects, with note tools for accessible communication. It’s easy to keep track of annotation projects since users can add tags to each and share links to them via various channels.

While the annotation process only includes commenting and highlighting, it remains a fantastic text tool as this can be done on any document, anywhere. As a result, reading is made more social, active, and visible.

This collaborative tool enhances the learning and teaching process as there is much more engagement between participants, leading to deeper comprehension.


Hypothesis is free and does not require a monthly or annual subscription.


InsertLearning is a chrome browser extension that is a select tool for users in education who need powerful features to simplify the integration and organization of information.

Founded by two high school teachers, this feature-rich tool is aimed at creating a more interactive learning environment that targets the needs of both students and educators. This makes it a popular tool amongst teachers.

Not only can students annotate web pages, but teachers can integrate over 60 different learning tools to make lessons more engaging. This includes Flipgrid, YouTube, Quizlet, edpuzzle, and much more.

Teachers can also monitor student performance and intervene as students need them since the note tools track student responses to questions in real time and make them immediately visible to the educator.

Class discussions about the text are embedded into the document, making everyday interactions much richer than what one would get from Google Docs, while also saving all changes via the archive tool.

As such, this collaborative tool greatly enhances the learning experience.


InsertLearning has a free plan available and two pricing plan options.

  • The first pricing plan is $19.99/month or $99/year for individual teachers.
  • The second pricing plan is aimed at schools, and the price is determined based on the number of classes and students.

PDF Annotator

PDF Annotator is a popular PDF software annotation tool used amongst students for its easy-to-navigate interface and well-performing note tools that allow you to insert content into texts.

Some of its key features include editing documents, reviewing, and enhancing the content or quality of PDF documents. Users can highlight, add text, sticky notes, images, and even draw shapes, making this a complete commenting tool option and a fantastic text tool.

Not only can students do manual annotation, PDF markups, and add notes with links for studying purposes, but teachers can provide detailed feedback on projects for effective learning.

In terms of organization, this feature-rich tool performs well as it houses all your PDFs under one roof for easy access while keeping all work saved thanks to the archive tool.

The user community can also view their annotated documents on any PDF platform – no need to worry about others being unable to view changes or suggestions. While this may be one of the more straightforward annotation tools for document purposes, its user-friendly status is one of its most powerful features, and still offers much more than Google Docs.


PDF Annotator has two main price plans, and both are license payment options, so there is no need for monthly or annual payments.

  • The first plan is for students at $39.95.
  • The second plan is for faculties at $69.95.

Drawboard Projects

Drawboard has two main divisions on the platform: Drawboard Projects and Drawboard PDF. The platform is ideal for design, architecture, or engineering students.

With Drawboard PDF, users have a select tool for adding drawings to their traditional files – the platform’s handy drawing tool displays various color options and pen thicknesses. The color tools and pick thickness options make the user community feel like they are genuinely drawing, giving them the freedom to add to any piece of content as they please.  

Extra features include image resizing tools that allow you to resize, rotate, crop, insert, and delete pages wherever needed.

With Drawboard Projects, the focus is on team collaboration for group projects. Students can collaborate via note tools such as markups, drawings, and editing documents. It can also be integrated with apps like Procore and Google Drive to make link sharing and the sharing of projects even more accessible for students who may still be using Google Docs.

This is a popular tool amongst teachers as they recommend it to students who want a powerful collaborative tool.


Drawboard PDF and Drawboard Projects each have their own price plans.

Drawboard PDF:

  • The first plan (Essential Plus) at $4.83/month.
  • The second plan (Premium) at $11.67/month.
  • The third plan (DrawboardPDFBusiness) price is determined by team size.

Drawboard Projects (has a 30-day free trial):

  • The first plan (Basic) at $19/month.
  • The second plan (Standard) at $35/month.
  • The third plan (Enterprise), the price is determined.


Nimbus is an innovative screencast tool and a chrome web extension with a wide variety of nifty features to assist those in learning environments.

Some key features include taking screenshots or screencasts of pages, editing documents, link sharing to distribute documents, and collaboration opportunities. It even offers web, mobile, and desktop functionality.

Extra features of the note tools include making notes on screenshots, images, and videos to share with classmates or teachers. 

For teachers, Nimbus is a select tool with the powerful feature of demonstrating concepts clearly during lessons. With this multi-tool, they can upload screenshots, and video recordings, and even create an online whiteboard. This feature-rich tool makes hybrid and online learning that much easier.


Nimbus has four main pricing plans available.

  • The first plan (Pro) at $3.5/month.
  • The second plan (Team) at $4/month/user.
  • The third plan (Combo Pro) at $5/month/user.
  • The fourth plan (Business) at $7/month/user.

Next is annotation software fit for project management.

Annotation Tools For Project Management

In an age where remote working is becoming more prevalent, organizations have been forced to find additional tools that enable seamless project management – especially in the case of larger teams.

Fortunately, an array of annotation tools are designed with just this in mind. Teams can easily share documents, track comments or changes in real-time, and keep everything organized to ensure projects are completed on time.

Of the wide range of annotation tools for project management to be found, here are your best options.


nTask is an annotation tool for project management that is great for teams who want features that enhance collaboration and productivity. This select tool provides features that help busy professionals organize and plan essential tasks.

One of nTask’s popular features is its Kanban Board which can help users visualize their project management tasks and responsibilities. Gantt charts are also available, which further assist teams with keeping track of a project and its progress. Choose from a range of available templates that illustrate project schedules. 

Over and above daily document and task management, nTask has other extra features like enabling teams to keep track of budgets and costs and provide financial summaries that create complete transparency.

If you are a modern team looking for better ways of work, this feature-rich tool for project management will make all the difference.


nTask has three main pricing plans available to choose from.

  • The first plan (Premium) at $3/month/user.
  • The second plan (Business) at $8/month/user.
  • The third plan (Enterprise), the price is determined based on the company’s needs.


Dropbox is a well-known annotation software option that assists its users with organization features. With Dropbox, users can access various file types anytime, including Cloud content and web shortcuts.

Dropbox is a feature-rich tool for project management that enables teams to store and access important files safely and easily, as well as sync and engage in file sharing with others, even if they don’t have their own Dropbox account. 

This select tool automatically backs up all your files using an archive tool and ensures that no important information is lost. It even enables the automation of file sharing requirements, such as naming, converting, tagging, and sorting. All data is completely secure, thanks to the latest encryption technology.

You can access Dropbox from your computer, phone, or tablet, which can integrate with apps like Zoom and Slack.

By centralizing your organization’s workspace with this excellent tool for document purposes, every team member will be more productive, collaborate more effectively, and have peace of mind knowing all their work is safely stored.


Dropbox has two pricing divisions, each with its own pricing plans.


  • The first plan (Plus) at $9.99/month.
  • The second plan (Family) at $16.99/month.


  • The first plan (Professional) at $16.58/month.
  • The second plan (Standard) at $15/month/user.
  • The third plan (Advanced) at $24/month/user.


Hive is a select tool for project management focused on productivity amongst teams. With Hive, users can use Kanban Boards, Combo Charts, Gantt Charts, and efficient meeting collaboration tools.

The platform makes visualizing complex topics easy with its Kanban Board and Gantt Chart features which provide an easier and more organized way of viewing tasks, who is working on them, and the progress of each task.

Meeting collaboration is one of the tool’s best features as it uses note tools to allow teams to take notes and track tasks in real time. This makes the meeting process more engaging and effective for enhanced performance.

Hive is an excellent management visualization tool for teams working in fast-paced environments. This collaborative tool has been shown to speed up workflows using project and action templates that capture repeatable steps as well as email notification options to complete tasks. 

An excellent extra feature is its integration capabilities that allow you to create over 1000 integrations with your favorite tools and pull this information into a centralized dashboard.


Hive has three main price plans available.

  • The first plan (Solo) is free-to-use.
  • The second plan (Teams) at $12/month/user.
  • The third plan (Enterprise), the price is determined.


Screenlight focuses on sharing projects with other team members with ease. This feature-rich tool for project management lets you upload audio files, video, and images while simplifying link sharing, reviewing, and commenting.

Teams can upload their files, and Screenlight will provide a preview selection for users to choose from that can enhance their project development further. With the ability to preview files according to your needs, teams will work more effectively. 

One of this select tool’s most popular features is one of its notes tools called a time-coded comment function, letting users comment alongside a project without waiting until the end to view a comment thread.

This makes it a fantastic text tool that is particularly useful for client feedback. Disorganized commentary can slow down workflows, so complete commenting tools are crucial for collaborative tools that help teams stick to project deadlines.

You can use Screenlight on your desktop, smartphone, or tablet. 

Extra features include fast uploads without size limitations, individualized permissions and feedback options for each stakeholder, plus branding capabilities so that Screenlight represents your company when you use it. This makes it an excellent choice for your sales team. 


Screenlight has three main pricing plans available.

  • The first plan is free for one user.
  • The second plan (Professional) at $9/month/user.
  • The third plan (Enterprise) from $500/month.

Red Pen

Made with design teams in mind, Red Pen users can quickly provide feedback on projects with the platform’s efficient commenting capabilities. So, while Red Pen isn’t specifically a tool for project management, its complete commenting tools make it the perfect collaborative tool that guarantees this part of the process doesn’t slow the project down.

You can integrate Red Pen with project management tools such as Basecamp, Trello, or Jira to create a feature-rich annotation tool that will empower creative teams to get things done.

Red Pen is a select tool for the visual collaboration of projects, and is suitable for teams who want to share files and gain access to powerful notes tools. What’s great about Red Pen is that most comments are live so that users can see any new comments in real-time.

Their focus on the user experience has rendered a feature-rich tool that can keep up with your thoughts, making the collaborative process more nuanced, detailed, and effective. Any changes are instantly saved using an archive tool.


Red Pen has four pricing plans to choose from.

  • The first plan (5 Projects) at $20/month.
  • The second plan (10 Projects) at $30/month.
  • The third plan (25 Projects) at $60/month.
  • The fourth plan (40 Projects) at $90/month.

Let’s look at annotation software specifically designed for collaboration.

Annotation Tools For Collaboration

Design teams and creative teams need to have the means for collaborative annotation, which requires much more sophisticated annotation software than PDFs, Google Docs, and Google Drive.

They need a shared creative space where all participants can view and share files and alter the media they are working on. This includes adding sticky notes, mood board creation, and complete commenting tools for multimedia use.

So, of the array of annotation tools designed for collaboration, which ones make the cut?


NoteLedge is another handy annotation tool by Kdan Mobile that focuses on improving team collaboration on projects with enhanced note-taking abilities. It’s aimed at design teams and content creators who must capture these and build on their ideas.

One of the collaborative tool’s main features is its digital notebook which contains a wide range of note tools. Users can capture project ideas and collaborate using multimedia tools to create content like mood boards. Teams can also save new ideas using an archive tool, share files, and create high-quality presentations. No more endless email chains that create confusion and slow everything down.

In essence, NoteLedge is a collaborative tool that has managed to digitize the creative process from start to finish. With its sketching and drawing tool, collage function, and visual web page access, creatives finally have the freedom to integrate and play with different media forms. Now they can access everything from sticky notes to Pinterest images to create top-notch presentation content. 


NoteLedge has three main pricing plans available.

  • The first plan (NoteLedge Basic) is free.
  • The second plan (NoteLedge Pro) at $2.49/month.
  • The third plan (Creativity365) at $4.99/month.

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FileStage is an annotation tool that focuses on reviewing and approving a variety of file formats such as PDF documents, designs, images, videos, and audio files.

This select tool for team collaboration comes with various note tools such as file and link sharing capabilities. This means that design teams and creative teams can easily exchange ideas and review projects effectively.

What makes this collaborative tool popular is its user-friendly interface that removes the need for endless email chains to review and approve a document. Another key feature is how it automates file sharing to speed up feedback. You can share as many files as you like containing all kinds of media, such as videos and audio files. Plus, there is an unlimited review option that allows you to add as many guest clients as you please. 

FileStage can also be integrated with other annotation and project management tools like Dropbox, Asana, Google Drive, and more to guarantee everything is saved via an archive tool.


FileStage has three pricing plans available.

  • The first plan (Advanced) at $19.45/month/user.
  • The second plan (Professional) at $39.92/month/user.
  • The third plan (Enterprise), the price is determined.


Web annotation tool Annotate lets users draft new documents directly on the platform. It also enables team collaboration throughout the drafting process.

Annotate is great for fact-checking as you can provide a link to the source, making reference accreditation much simpler and faster. All files can be stored in Annotate using an archive tool, so there is no need to work on different file platforms.

It is also an indexing tool that allows you to catalog other document formats and images. This makes it useful for document management while also streamlining document workflows for a smarter digital workspace. The workflow function makes it easy to decide on the next steps as you can assign tasks and deadlines to different people with an email notification, making feedback management clear and efficient for a faster approval process.

With this collaborative tool in hand, your creative teams and design teams can say goodbye to isolated silos and hello to a shared workspace that gives everyone the means to perform at their best.


Annotate has three pricing plans available.

  • The first plan is free.
  • The second plan (Standard), the price is determined.
  • The third plan (Enterprise), the price is determined.


zipBoard is a web-based annotation and feedback tool suited to all types of content. This select tool assists with team collaboration by making the reviewing and approval process easier thanks to its centralized content capabilities.

With zipBoard, users can annotate videos, audio files, PDFs, webpages, images, and more. Another impressive feature of this tool is its ability to let teams and guest clients submit comments using note tools without the need to create guest profiles.

It effectively clears the clutter to create a streamlined collaboration process that professionals and non-technical clients can easily engage with, stopping endless email chains.

The focus is on conducting visual reviews, so zipBoard includes features such as an online whiteboard and screenshot tools to communicate complex feedback visually.

You can also create unlimited projects and install widgets that organize your feedback, making this a must-have collaborative tool for creative and design teams.


zipBoard has three price plans available, each with a 15-day free trial.

  • The price is determined for the first plan (Team) and is the best for small teams.
  • The price is determined for the second plan (Agency) and is the best for agencies with multiple managers.
  • The price is determined for the third plan (Enterprise).


Wipster is an excellent annotation tool for creative teams, including video proofing features. Teams can collaborate on various projects with other creatives, and the tool includes an unlimited reviewer option, speeding up the approval process.

Wipster’s note tools are also one of its main selling points, with closed captions, threaded comments, feedback capabilities, and more, making this a fantastic text tool for documentation purposes. The privacy feature allows you to limit who can view the project. 

Wipster can even sync feedback with the creation or collaboration software you currently use to speed up the editing process. And what makes it an attractive collaborative tool for stakeholders who have to provide feedback is that they don’t have to download plugins or software and can leave comments using their mobile phones while on the move.

This collaborative tool integrates with platforms like Slack, Dropbox, Vimeo, Wistia, and a variety of others.


Wipster has four pricing plans available.

  • The first plan is free.
  • The second plan (Team) at $19.95/month/user.
  • The third plan (Multi-team) at $39.95/month/user.
  • The fourth plan (Enterprise), the price is determined.


With Diigo, you can annotate PDFs and web pages while surfing the internet. Tag your favorite pages, add sticky notes, and highlight important text. This makes it easy to share files with others, collaborate, and go through the approval process.

Diigo archives your tags and changes, so you always have access to them, keeping your annotations organized. Since it connects to the Cloud, you can be sure you won’t lose your work.

Its extra features include bookmarks, a personal library, automated research streamlining, and link storage even when they are no longer active. Now design and creative teams can keep track of all their work on the web.


Diigo has four pricing plans.

  • The first plan is free but has fewer features.
  • The Standard plan is $40 per year.
  • The Professional plan is $59 per year.
  • The Business plan is $10 per month per user

Last but not least – annotation software for business needs.

Annotation Tools For Business

Making sure your daily business operations run smoothly is a complex task, and annotation tools can make it that much easier for the business professional to succeed, especially within larger teams.

Whether you’re in a design team, creative team, marketing team, or sales team, you’ll need to manage complex documents, compile reports, optimize your sales reports, convert or combine different documents, coordinate tasks with colleagues, and so much more.

Let’s see which annotation tools are amongst the wide range of annotation tools created for business needs you should have in your organization.

Adobe Acrobat Pro DC

Adobe Acrobat Pro DC is one of the most well-known annotation tools on the market, and for businesses, it truly does offer some great features.

Adobe Acrobat Pro DC has note tools that cater to users who want to edit, comment, share, and review PDFs with team members and clientele. With this fantastic text tool, users can combine different files into one document, add notes, convert their PDFs into Word, Excel, and Powerpoint documents, and convert images into PDF format.

From a business perspective, this select tool for organizational needs ticks all the most important boxes.

With Adobe Acrobat Pro DC, you can edit documents, store and manage your work, track what’s going on with documents sent for review or signature, integrate with Google Drive or Dropbox, and convert documents as needed. You can also use Adobe Acrobat Pro DC on your desktop, phone, or tablet. And it comes with the free Acrobat Reader for PDF markups. 

So, if you’re looking for a single annotation tool that includes all the business features you need for the daily operations of a larger team – no matter what business level you are at – Adobe Acrobat Pro DC is the answer.


Adobe Acrobat Pro DC has two main pricing plans under their Business section.

  • The first plan (Acrobat DC for teams) at $18.06/month.
  • The second plan (Acrobat DC for enterprise), the price is determined.


Markup by Kdan Mobile is an annotation tool that assists with summarizing key points, whether from websites or PDF files. The platform uses AI technology to generate a smooth annotation experience.

One of Markup’s top business features is its note tools combined with the platform’s AI summarizing capability. This makes for more efficient annotation of larger articles, meeting minutes, administrative documents, and more.

It even keeps track of articles you’ve read and makes suggestions for others you wouldn’t want to miss out on. This fantastic text tool will help you stay up to date on the latest business trends and events. You can also sync your readings across devices as it’s available on iOS web and web extensions.

Markup is a select tool for busy business professionals who need annotation software that enables higher productivity levels and offers features for collaboration with larger teams.


Markup is a free-to-use annotation tool with in-app purchase options should you want to enhance the experience further.

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Perfect for entrepreneurs, small businesses, and freelancers, this select tool combines organization, collaboration, and business features to help professionals keep track of their work.

ClickUp is designed for businesses looking for an annotation tool that allows teams to create external and internal documents while also editing and creating wikis for those documents. Annotate on both PDFs and images (.gif, .png, .webp, .jpeg).

The user community has access to sophisticated note tools that can comment on, edit, and sync projects. With its collaboration detection function, you can also see when teammates are commenting or editing in real-time, greatly improving workflow in remote environments for larger teams.

You have the additional option of creating digital mind maps to organize your thinking. ClickUp integrates with various platforms such as Google Drive, Slack, Microsoft Teams, and Zoom, making it a powerful collaborative tool.


ClickUp has five price plans available. 

  • The first plan is free.
  • The second plan (Unlimited) at $5/month/user.
  • The third plan (Business) at $12/month/user.
  • The fourth plan (Business Plus) at $19/month/user.
  • The fifth plan (Enterprise), the price is determined.

MarkUp Hero

Not to be confused with Kdan Mobile’s MarkUp, MarkUp Hero is an annotation and screenshot tool that focuses on improving team communication and productivity. This annotation software is aimed at content creators and marketing teams and enables them to share work on the internet.

The innovative screencast tool’s key features include taking screenshots, cropping and resizing an image, and other screenshot tools that allow one to mark them up. The main goal of this tool is to speed up workflows and improve communication between larger teams on different projects.

MarkUp Hero has applications for Linux, Mac, Windows, and Chrome.


MarkUp Hero has three pricing plans available.

  • The first plan (Sidekick) is free and best for individuals looking to experiment with the features.
  • The second plan (Hero) is free and best for individuals looking for basic features.
  • The third plan (Superhero) at $4/month.


Scale is an annotation tool specializing in speech and audio annotation to assist opportunities for NLP (Natural Language Processing). 

Scale is a tool for machine learning contexts designed to integrate with machine learning. All users need to do is send the sensor data they have collected to Scales’ API (Application Programming Interface), and the tool will take care of the annotation.

Scales’ main business feature is its audio speech tools which convert audio files into direct text translations, making managing business meetings and other projects easier. These audio files can also be translated and converted into other languages, greatly assisting international companies in their communication efforts.

Scale’s automated quality assurance system guarantees the best annotations, especially in applications where security is a top priority. So, if your top requirement is quality speech tools, Scale is the answer. 

It can also be integrated with Google Docs, Diffgram Data Labelling, or Pilot.


Scale has two main pricing plans available.

  • The first plan (Rapid), is ideal for experimental projects, the price is determined.
  • The second plan (Enterprise), the price is determined.

Zoho Annotator

Zoho Annotator makes marking up on web pages a breeze. And once you’ve added comments, you can save these as images.

This screencast and screen-capturing tools also come with a customizable drawing tool that enables business professionals to create infographics with the infographic template, mock-ups, and design diagrams. The drawing tool is a helpful business feature that will simplify and speed up the creation process.


Since it’s free, you have no reason not to try it!


Doccano is an open-source commercial data annotation tool for machine learning practitioners, which is ideal for business, that needs to hire dedicated developers. This feature-rich software can conduct text summaries and analysis, sequence labeling, and entity recognition, making it an excellent tool for machine learning contexts.

This is a select tool for web developers or non-technical clients who are learning to manually label data.


Since this is an open-source data annotation tool option, it’s free for all.

What’s Your Perfect Pick?

With such a wide range of annotation tools on the market, you are sure to find that perfect match. Aside from choosing which purpose is your top priority – learning, project management, collaboration, or business – you may have some secondary considerations. 

I want a free option

If resources are tight and you’d like to start off with a simple, cost-effective option, then you will are limited to the following annotation tools:

  • Hypothesis
  • InsertLearning
  • Screenlight
  • Annotate
  • Wipster
  • Diigo
  • Markup
  • ClickUp
  • MarkUp Hero
  • Zoho Annotator
  • Doccano

Of these, you are likely to get much more out of annotation software such as MarkUp, which uses AI technology for more sophisticated note tools, or Wipster, which is ideal for creative teams because it enables video proofing.

I want a multi-tool option

If you’re looking for more bang for your buck, you should definitely consider annotation software that delivers a greater variety of tools. 

Your best bet would be:

  • Drawboard Projects for learning, as it offers both PDF note tools and collaboration tools that include drawing.  
  • Hive for project management, as it is a management visualization tool that provides many different options for how to visualize and execute a project. 
  • NoteLedge for collaboration, as it empowers creative teams to design top-notch presentation content by giving them access to every visual platform you can imagine. 
  • Adobe Acrobat Pro DC for project management, as this is an all-in-one solution for any business professional. 

And if you aren’t sure which one to choose, make a list of the top five needs it must satisfy and create a shortlist from there.

Do more research on each tool to find the annotation software that ticks most of your boxes for you, and there you have it…a solution that will make your life that much simpler.

Find out more about MarkUp and NoteLedge – Kdan Mobile’s top annotation tools – here.