Comparison

Flumen vs Sutra

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Flumen

Features
Read full description

Read your EPUB books on iPhone, iPad, and Mac with Flumen. Import your own files, browse classics, and keep your books together in one library. Organize your books Create collections, sort by title, author, or progress, and filter books by what you've started or finished. Bookmark the book you're reading to keep it at the top of Library and ready to open from Home. Return to your reading Home shows your current book, saved chapter, and reading progress, with a Continue Reading button to take you back. See how many minutes you've read today and return to other books you've started. Set up the page to suit you Choose a reading theme, font, and text size. Use Paper or Sepia for a warmer page, or switch to a dark theme. Flumen remembers your reading preferences for each book. Find something to read Browse genres and authors, search Project Gutenberg and Standard Ebooks, and download public-domain books straight to your library. Open a book's details to learn more before adding it. Flumen Pro The free version holds up to 15 books and includes EPUB import, Discovery, collections, reader customization, and today's reading time. Flumen Pro is a one-time purchase that adds: • Unlimited books in your library. • Reading goals, streaks, weekly charts, and monthly summaries, including a comparison with the same point last month. • iCloud sync for your books, reading progress, collections, bookmarked book, and reader settings across your Apple devices. To sync, sign in to the same Apple Account with iCloud enabled on each device. Privacy Your library and reading history are stored on your device, with optional iCloud sync through Flumen Pro. Flumen has no ads or third-party analytics tracking.

About

Sutra

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.

Highlights
  • 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
Features
Read full description

Sutra is a warm, thoughtful home for every book and comic you love. Bring together your self-hosted library, your manga, your classic EPUBs, and those “just one more chapter” reads in one beautifully calm reader. Connect Kavita, Komga, or Calibre; explore any OPDS catalogue; or discover a new favourite from Project Gutenberg and Standard Ebooks. READ YOUR WAY • Enjoy EPUB, PDF, CBZ, MOBI, fixed-layout comics, and manga in one place • Move through comics panel by panel, or take in the whole page • Read right-to-left manga and beautiful iPad two-page spreads • Make the page yours with fonts, text size, spacing, themes, auto-scroll, page turns, and Sutra-only brightness control A LIBRARY THAT FEELS LIKE HOME • Browse dedicated Series and Collection views, with Favorites always close by • Sort by Recently Read, Title, Author, or Date Added while staying in a familiar cover grid • Let Sutra recover missing Calibre series details and keep your library beautifully organised • Pick up where you left off with dependable progress and finished-book sync for Kavita and Komga BUILT FOR SELF-HOSTERS • Connect Kavita, Komga, Calibre, Grimmory, or another OPDS server • Stream comic pages from Kavita and Komga when available, or download for offline reading • Keep your highlights and reading progress with you across your Apple devices Sutra is free to enjoy for EPUB and PDF reading, with no ads and no subscription. Unlock unlimited CBZ, MOBI, and Komga reading once, and keep it forever.

Screenshots

Flumen4 screens
Sutra4 screens

Verdict

The call

Flumen and Sutra are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Flumen sells 1 one-off in-app purchase and Sutra sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Flumen ships an update every 9 days, Sutra weekly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

ScorecardNo meaningful differences
Flumen versus Sutra: the parameters behind the verdict, then further details
ParameterFlumenSutra
PriceFreeFree
Rating—4.3 (17 ratings) — better
Positive reviews—73.3% of reviews
Number of ratings—17 — better
Update frequencyEvery 9 daysWeekly — better
AdsNoNo
In-app purchasesYesYes
Monetization—Free
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size16 MB42 MB
Age rating12+4+
DeveloperMathias Jaeger-PedersenKoustav Dasgupta

In-app purchases

1 purchases

Flumen

One-time1
  • Flumen Pro$6.99
4 purchases

Sutra

One-time4
  • Small Tip$1.99
  • Medium Tip$2.99
  • Large Tip$4.99
Show 1 more
  • Sutra Pro$6.99

Questions

Is Flumen free?
Flumen is free to download, with in-app purchases available.
Is Sutra free?
Sutra is free to download, with in-app purchases available.
Do Flumen or Sutra have ads?
Neither Flumen nor Sutra shows ads.
Which is updated more often, Flumen or Sutra?
Flumen ships an update every 9 days, and Sutra weekly. Most recently, Flumen was updated on October 28, 2026 and Sutra on October 25, 2026.

Other comparisons