Readest vs Thorium Reader

Readest9.4Visit Thorium Reader8.9Visit

Higher score Readest #1 in Ebook Reader Software 9.4/10 Free plan Free plan✓ 3 of 3 features Visit Readest

vs

Thorium Reader #4 in Ebook Reader Software 8.9/10 Free plan Free plan✓ 2 of 3 features Visit Thorium Reader

• Readest fits best

  Cross-platform readers and annotation-heavy workflows

• Thorium Reader fits best

  Accessible desktop reading with DRM support

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Side by side

Feature	Readest 9.4/10 Visit ↗	Thorium Reader 8.9/10 Visit ↗
At a glance
Editor score	9.4	8.9
Ranking	#1 in Ebook Reader Software	#4 in Ebook Reader Software
Best for	Cross-platform readers and annotation-heavy workflows	Accessible desktop reading with DRM support
Pricing model	Free plan + paid	Free
Starting price	$4.99/mo	Free plan
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud, Self-hosted, Desktop, Mobile	Desktop, Mobile
Platforms	Web, Windows, macOS, Linux, iOS, Android	Windows, macOS, Linux, iOS
Support	Email, Community, Docs	Email, Tickets, Community, Docs
Integrations	9 integrations	4 integrations
Built for	Solo, Small business, Mid-market	Solo, Small business
Features Readest 3/3 · Thorium Reader 2/3
Annotation tools	✓	✓
Reading sync	✓ (best)	Not checked yet
Offline reading	✓	✓
Specs
Supported platforms	web, Windows, macOS, Linux, iOS, Android	Windows, macOS, Linux, iOS, iPadOS
Supported formats	EPUB, PDF, MOBI, AZW, AZW3, FB2, CBZ, ZIP, TXT, Markdown	EPUB 2/3, Fixed Layout EPUB, PDF, DAISY 2.02/3, Web Publications
Library storage	0.5 GB	Not checked yet
Our review
Pros	Runs on web, desktop, and mobile platforms Supports broad ebook, document, comic, and text formats Exports notes and excerpts to Markdown, text, or JSON	Supports EPUB, PDF, DAISY, and Web Publications Includes annotations, bookmarks, search, and offline reading Offers keyboard navigation and screen-reader support
Cons	Cloud storage is part of paid plans Advanced AI tools are limited to the Pro Plan Support varies from community support to priority support	Offline reading applies to downloaded publications OPDS browsing depends on available catalogs Readium LCP support is limited to protected LCP publications
Our verdict	Readest is an open-source ebook reader for people who read across devices and formats. It runs on the web, Windows, macOS, Linux, iOS, and Android, with support for EPUB, PDF, MOBI, AZW/AZW3, FB2, CBZ/ZIP, TXT, and Markdown. Its reading… Read the review →	Thorium Reader is a free digital reading application and personal library for ebooks, audiobooks, comics, manga, and documents. It is suited to readers who need broad accessibility support, offline access, and compatibility with EPUB, PDF,… Read the review →

Strengths and trade-offs

• Readest — where it wins

  • Runs on web, desktop, and mobile platforms
  • Supports broad ebook, document, comic, and text formats
  • Exports notes and excerpts to Markdown, text, or JSON

  Where it doesn't

  • Cloud storage is part of paid plans
  • Advanced AI tools are limited to the Pro Plan
  • Support varies from community support to priority support

• Thorium Reader — where it wins

  • Supports EPUB, PDF, DAISY, and Web Publications
  • Includes annotations, bookmarks, search, and offline reading
  • Offers keyboard navigation and screen-reader support

  Where it doesn't

  • Offline reading applies to downloaded publications
  • OPDS browsing depends on available catalogs
  • Readium LCP support is limited to protected LCP publications

• Readest9.4/10 · Free plan

  A cross-platform ebook reader for broad format support and detailed annotations.

  Visit ReadestFull verdict →
• Thorium Reader8.9/10 · Free plan

  A free, accessible reader for EPUB, PDF, DAISY, and Web Publications.

  Visit Thorium ReaderFull verdict →