Blubb Reader vs Compendium Audiobooks
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.
Compendium Audiobooks
Access a vast library of classic literature and philosophy as audiobooks. Enjoy chapter-by-chapter playback with adjustable speed and background listening. Start with free first chapters and unlock more content with an account.
- 690+ audiobooks library
- Chapter-by-chapter playback
- Adjustable playback speed
- Background audio playback
- Save progress across sessions
- No sign-up required for free chapters
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The great books. Beautifully read. Compendium is a library of 1,100+ classic audiobooks, from Plato and Marcus Aurelius to Austen, Dostoevsky, Shelley, Nietzsche and Poe. The text of every book is on screen while you listen. The first chapter of every book plays free, with no account needed. LISTEN AND READ - Switch between Listen and Read at any time. The sentence being read is highlighted as it plays. - Two narrators on selected titles, Nathaniel and Amelia. Switch mid-chapter without losing your place. THE LIBRARY - 1,100+ titles in philosophy, classic and literary fiction, gothic and horror, adventure, mystery, poetry, drama and history - Over 10,000 hours of listening, with new books added regularly THE PLAYER - Playback speed, 30-second skips, sleep timer and a chapter list - Background audio with lock-screen and Control Center controls - Download whole books to listen offline (subscribers) - Your place syncs across iPhone, Android and the web - Listening hours, books finished and your streak on the home screen - Share the line you're hearing as an Instagram Stories card - Add friends by username to see what they're reading ACCOUNTS AND SUBSCRIPTIONS A free account lets you keep one full book and saves your progress across devices. Full-library listening, account and subscription management happen on compendium.audio. Questions: support@compendium.audio
Screenshots
Verdict
The clearest difference is iOS requirement: Compendium Audiobooks at 16.4 against Blubb Reader's 18.0. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Blubb Reader | Compendium Audiobooks |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | — | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 215 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Chuanjie Duanmu | Compendium LLC |
In-app purchases
Blubb Reader
No in-app purchases
Compendium Audiobooks
No in-app purchases
Questions
Is Blubb Reader free?
Is Compendium Audiobooks free?
Do Blubb Reader or Compendium Audiobooks have ads?
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