Blubb Reader vs Audiobook Co
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Blubb Reader
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Blubb is a free reader for books and research papers. Import EPUB, PDF, text, and scans, then read and listen offline. For research papers with an available arXiv HTML edition, Blubb offers a formatted view that preserves equations, figures, tables, citations, and working links. Keep the original PDF at hand and change the reader's font, size, theme, and page or scrolling layout. On-device voices read aloud from your last position. Notes and highlights stay with each book. Alice's Adventures in Wonderland is included to get you started. No account, subscription, ads, or tracking. Your imported books and notes stay on your device. iCloud sync is under development and unavailable in this release.
Audiobook Co
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MANY SERVERS, ONE LIBRARY • Sign in to every Audiobookshelf server you have an account on and browse them as one shelf. • A book held on two servers appears once. • A series split across servers reads as one series, in order. • Your progress goes back to each server, so it follows you to your other devices and apps. A PLAYER BUILT FOR LONG BOOKS • Chapters, bookmarks, a sleep timer, and a playback speed that stays set. • Keeps playing with the screen locked, with lock screen, Control Center and headphone controls. • Download books and listen offline. LISTEN AND READ IN ONE APP • A reader for EPUB, PDF and comic books. • The player keeps going while the reader is open. FIND YOUR NEXT BOOK • The next and missing books in your series, more from the authors and narrators you like, and books like the ones you have finished. • Like a book, mark it Not for me, or add it to your wishlist. • Recommend a book to the people who share your server, or ask its owner for one you would like. • Sponsored and promoted books are always labelled. Discover and its shop links are offered in the United States. • Disclosure: we may earn a commission when you buy through shop links in the app, at no cost to you. MAKE IT YOURS • Light or dark theme, your own accent colour, and text that scales up or down. • List or grid, sort and filter, and the tab the app opens on. PRIVATE BY DESIGN • Never changes files or metadata on your server. It writes your listening progress and nothing else. • No account with us, and no tracking. • Sharing your reading taste for better suggestions is off until you switch it on, and you can delete what you have shared at any time. WHAT YOU NEED An Audiobookshelf server you can sign in to — your own, or one somebody has given you an account on. Audiobook Co-op has no books of its own. Audiobookshelf is an independent open-source project; Audiobook Co-op is not affiliated with it or endorsed by it. FREE, WITH ONE-TIME UNLOCKS Free with one server, with the player, the reader, downloads and Discover all included. The free version shows sponsored and promoted books, always labelled. Nothing is a subscription. • Two servers: merge a second server into the library, and stop the sponsored banner opening by itself. • Unlimited: any number of servers, a sponsored banner you can switch off, and new-release alerts for your series. • Family: everything in Unlimited, shared with up to five family members through Family Sharing. Tips are optional and unlock nothing. Privacy policy: https://sidequestered.com/audiobookcoop/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Blubb Reader at none against Audiobook Co's 5. Audiobook Co's advantage is iOS requirement (16.0 vs 18.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Audiobook Co sells 5 one-off in-app purchases. Blubb Reader asks for nothing beyond the download.
| Parameter | Blubb Reader | Audiobook Co |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 2 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 215 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Chuanjie Duanmu | Side Questered LLC |
In-app purchases
Blubb Reader
No in-app purchases
Audiobook Co
- Tip$1.00
- Two servers$2.99
- Upgrade to unlimited$4.00
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- Unlimited servers$6.99
- Unlimited servers, family$19.99









