Sutra — eBook Reader

Sutra — eBook Reader

Read Kavita, Calibre & OPDS

5 ratings
8 reviews
Free

Details

  • Released
  • Updated
  • July 7, 2026
  • August 17, 2026

Features

Sutra — eBook Reader video #1 for iPhone
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Sutra — eBook Reader screenshot #12 for iPhone
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About

Access your entire book collection from various sources in one beautiful app. Enjoy a customizable reading experience with synced progress, bookmarks, and highlights across devices. Organize your library with series info, search, and collections.

Connect Kavita, Calibre, and OPDS servers
EPUB and PDF reading with page-curl effect
Rich typography and reading themes
iCloud sync for progress, bookmarks, and highlights
Offline downloads
Highlighting and search functionality
Series grouping and collections
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What's New in Sutra

2.1.7

August 17, 2026

We've been busy! Here's what's new in Sutra: Try Before You Buy Every CBZ comic and comic-shaped MOBI book now opens with a free 7-page preview — read the first 7 pages of anything in your library before deciding whether to unlock Sutra Pro. Reading Statistics A new Stats tab: time read, streak, a swipeable activity chart, and your reading progress across every book in one place. WebDAV Server Support Browse and download EPUB/PDF files straight from a WebDAV server — Synology, and any other WebDAV host — with self-signed certificates supported via a one-time trust prompt. Manga Support Read comics right-to-left, top-to-bottom — tap left to advance, tap right to go back, and panel order flows top-right to bottom-left. Switch any comic between Regular and Manga from the reader's Aa menu; it's remembered per book. Comic panel detection now has dedicated tuning for manga-style pages, on top of general improvements to how accurately panels are cropped for every comic. Tons of Fixes and Improvements Smoother, more accurate continuous scrolling that reliably resumes exactly where you stopped, easier connectivity to self-hosted servers without HTTPS configured (with clearer guidance for Tailscale and similar VPN setups), faster and more reliable loading for large libraries, more accurate comic panel detection across the board, and a fix for books occasionally opening to a blank page. Also New Two-Panel Reading on iPad (EPUB, MOBI, and PDF books show a facing-page spread in landscape), pinch-to-zoom on images, a new high-contrast Contrast reading theme, page-curl animation for comics, and a smarter library with on-device caching, per-library filtering, and bulk collection management. Thanks for reading with Sutra — happy reading!

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User reviews

Display of pdf

Another comment: for pdf richely designed, i.e. with pictures, frames, etc. there should be an option to display the original pdf as-is, without rendering it’s text independently from the original design.
Comment because some pdf aren’t really readable because of this rich design which is difficult to handle
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Response from developer

Thanks for the feedback! I'll look into full white characters for a dark theme as an option. To your other question, I'm trying to create an option for users to open a couple of cbz files as a part of the free offering so that they can test out the feature as a part of the 2.1 release

Calibre web support broken

I have tried several times now to get my Calibre web library working but it just hangs. I’ve done so much troubleshooting on my server to try and diagnose why it doesn’t work. I can put in my server details and it recognizes my library but just never returns. If I ever get it working maybe I can see how well it actually works as an OPDS client. Komga support is also welcome and interesting but I’m not paying money if I can’t get the basic functionality working.
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Response from developer

Sorry to hear that! I would appreciate it if you could submit feedback here with your specific issue, and I will take a look to see how we can fix it - https://sutra-reader.com/feedback.html

Amazing reading experience

This is a solution for all your e reading problems. Loving the ability to link to Kavita and Gutenberg. And the reading experience has been fantastic. Takes a bit to load my library, but is great after that.

Smooth

I like that it is easy in use. Also that it is free. Thanks to the app I did setup my own calibre( i will test it for 1-2 weeks and definitely support. Even if I don't need that extra options). Maybe we can get a Google translator.

Handling of epub full pages should be improved

The application is great, in particular it’s ability to connect to Calibre and Kavita servers. However, the display of epub pages is weak and could be improved. The page does not fully occupy the full display of an iPad
Furthermore when you choose a dark theme full white characters could be enabled to enhance contrast
You should also allow one import of cbz file so that one can test your display of a comic, before buying the pro version
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Response from developer

Thanks for the feedback! I'll look into full white characters for a dark theme as an option. To your other question, I'm trying to create an option for users to open a couple of cbz files as a part of the free offering so that they can test out the feature as a part of the 2.1 release

FAQ

What is Sutra?

Sutra is an eBook reader designed to consolidate your entire book collection from various sources like Kavita, Calibre, OPDS catalogs, and public domain libraries into a single, user-friendly application.

Does Sutra have ads?

No, Sutra is completely free and does not contain any advertisements. The app is ad-free, with no in-app purchases or subscriptions required.

What devices does Sutra support?

Sutra is available for iPhone and iPad, offering a seamless reading experience across Apple devices.

How does Sutra sync my reading progress?

Sutra syncs reading position, bookmarks, and highlights via iCloud across your iPhone and iPad. For Kavita libraries, it offers page-accurate progress syncing both ways with your server.

Can I read books offline with Sutra?

Yes, Sutra allows for offline downloads of your books, ensuring you can continue reading without an internet connection.

What file formats does Sutra support?

Sutra provides a gorgeous reading experience for EPUB and PDF files, offering features like authentic page-curl effects and rich typography control.

How often is Sutra updated?

Sutra was last updated on July 16, 2026, with version 1.3.0. This indicates a recent update, suggesting ongoing development and support.

What is the age rating for Sutra?

Sutra has an age rating of 4+, making it suitable for a wide range of users, including younger readers.