Readest
Readest: A cross-platform ebook reader for broad format support and detailed annotations. Ranked #1 of 27 in Ebook Reader Software by our editors (9.4/10); pricing: Free plan; best for cross-platform readers and annotation-heavy workflows.
At a glance
- Editor score9.4 / 10
- PricingFree plan
- Best forCross-platform readers and annotation-heavy workflows
- Free planYes
- Paid from$4.99/mo
- Annotation toolsYes
- Facts checked22 Sep 2026
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
Our verdict on Readest
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 toolkit includes customizable typography, text-to-speech, translation, dictionary or Wikipedia lookup, side-by-side reading, offline reading, and library organization with search, filters, grouping, and OPDS catalogs. Readers can also highlight, underline, add notes, save excerpts and bookmarks, and synchronize books, progress, highlights, and notes across devices.
The Free Plan costs $0 per month and includes cross-platform sync, customizable reading, AI read aloud, AI translations, and community support. The Plus Plan costs $4.99 per month and adds unlimited AI read-aloud hours, DeepL Pro access, cloud storage, and priority support. The Pro Plan costs $9.99 per month and adds early feature access and advanced AI tools alongside the Plus benefits. One-time options include Lifetime 1 GB for $9.99, Lifetime 2 GB for $14.99, Lifetime 5 GB for $29.99, and Lifetime 10 GB for $49.99. Full Customization costs $19.99 one time and adds lifetime access to additional themes, fonts, layouts, read-aloud, translators, and cloud storage services.
Annotation-heavy workflows are a clear focus. Readest can export annotations to Markdown, plain text, or JSON, and it connects with KOReader, Readwise, BookOrbit, Hardcover, Notion, calibre, Audiobookshelf, LocalSend, and Obsidian. These options suit readers who want their library, reading progress, and notes to move between platforms and related tools. Choose Readest if broad format support, cross-device reading, offline access, and annotation export matter most. Readers seeking paid cloud storage, expanded AI capabilities, or additional customization should compare the Plus, Pro, lifetime storage, and Full Customization options.
Your product? Our editors can test Readest in depth and publish a review, labelled as paid · from $149/mo →
Readest pricing
All 8 Readest plans and prices →
Readest fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $4.99/mo |
| Supported platforms | web, Windows, macOS, Linux, iOS, Android |
| Supported formats | EPUB, PDF, MOBI, AZW, AZW3, FB2, CBZ, ZIP, TXT, Markdown |
| Annotation tools | Yes |
| Reading sync | Yes |
| Offline reading | Yes |
| Library storage | 0.5 GB |
| Deployment | Cloud, Self-hosted, Desktop, Mobile |
| Platforms | Web, Windows, macOS, Linux, iOS, Android |
| Support | Email, Community, Docs |
| Built for | Solo, Small business, Mid-market (editorial estimate) |
| Integrations | 9 integrations: KOReader, Readwise, BookOrbit, Hardcover, Notion, calibre … |
| Pricing | Free plan (source) |
| Website | readest.com |
| Facts checked | 22 Sep 2026 |
Readest integrations
Readest lists 9 integrations on its own site.
- KOReader
- Readwise
- BookOrbit
- Hardcover
- Notion
- calibre
- Audiobookshelf
- LocalSend
- Obsidian
Alternatives to Readest
- BookFusionA flexible cloud library for mixed-format readers who want offline access and sync.9.2
- PocketBook ReaderA format-rich free reader for mobile users who need Adobe DRM and reading-position sync.9.0
- Thorium ReaderA free, accessible reader for EPUB, PDF, DAISY, and Web Publications.8.9
See all Readest alternatives →
Readest vs the competition
- Readest vs BookFusion
- Readest vs PocketBook Reader
- Readest vs Thorium Reader
- Readest vs Moon+ Reader
- Readest vs KOReader
- Readest vs eBoox
Compare Readest with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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