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OntheFly vs Readwise

Professional comparison and analysis to help you choose the right software solution for your needs.

OntheFly icon
OntheFly
Readwise icon
Readwise

OntheFly vs Readwise: The Verdict

⚡ Summary:

OntheFly: OntheFly is a cloud-based PDF editor that allows users to easily edit, annotate, and modify PDF documents without installing any software. It provides a simple interface for making quick changes to PDFs.

Readwise: Readwise is a read-later app that helps you track, organize and review highlights from articles, books and websites. It syncs highlights from Kindle and Pocket automatically, allowing you to easily revisit your highlights later.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature OntheFly Readwise
Sugggest Score — —
Category Office & Productivity News & Books

Product Overview

OntheFly
OntheFly

Description: OntheFly is a cloud-based PDF editor that allows users to easily edit, annotate, and modify PDF documents without installing any software. It provides a simple interface for making quick changes to PDFs.

Type: software

Readwise
Readwise

Description: Readwise is a read-later app that helps you track, organize and review highlights from articles, books and websites. It syncs highlights from Kindle and Pocket automatically, allowing you to easily revisit your highlights later.

Type: software

Key Features Comparison

OntheFly
OntheFly Features
  • Cloud-based PDF editor
  • Edit, annotate and modify PDFs
  • No software installation required
  • Simple interface for quick PDF edits
Readwise
Readwise Features
  • Syncs highlights from Kindle and Pocket automatically
  • Helps track, organize and review highlights from articles, books and websites
  • Web clipper to save articles to Readwise
  • Daily review of highlights sent in email digest
  • Integrates with apps like Notion and Roam Research
  • Available as web app, mobile app and browser extension

Pros & Cons Analysis

OntheFly
OntheFly
Pros
  • Easy to use
  • Accessible from anywhere
  • Collaborate with others on PDFs
  • No limits on PDF size or number of edits
Cons
  • Requires internet connection
  • Potential privacy/security concerns
  • Limited formatting options compared to desktop editors
  • No offline access
Readwise
Readwise
Pros
  • Saves time by automating highlight collection
  • Great for learning retention and reflection
  • Integrates seamlessly with Kindle
  • Clean and intuitive interface
  • Powerful search and organization features
Cons
  • Mobile app lacks some features of web app
  • No support for audio books
  • Highlight sync can be slow at times
  • Web clipper is very basic
  • Limited customization options

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OntheFly
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Readwise
Readwise
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