Compare software

Reader ModeHelperbird
Freemium

Free with a paid tier for additional features.

 Freemium

Free to use, with a Pro subscription advertised at $20 a year during a sale.

Browser extension Browser extension, iOS
  • Adds text-to-speech and reading rulers beyond basic reader views
  • Works across web pages and PDFs from one extension
  • Many accessibility tools combined in one extension
  • Dyslexia fonts, spacing controls and colour overlays on any page
  • Browser extension only, with no standalone app
  • Some advanced features are gated behind the paid tier
  • Some tools require the paid Pro tier
  • Proprietary, closed-source extension
Browser extension Browser extension
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.