Drowsebook vs Delphi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Drowsebook
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Read and listen to your own books with a quiet, local-first iPhone reader. Drowsebook imports DRM-free EPUB, PDF, TXT, MOBI, and AZW3 files. It keeps your bookshelf, reading positions, bookmarks, PDF cleanup rules, and listening progress on your device. What Drowsebook is built for: • Read imported books with typography tuned for long sessions • Listen with Apple system voices through AVSpeechSynthesizer • Continue audio in the background with Lock Screen controls and ±15s jumps • Clean noisy PDFs by hiding page numbers, footnotes, short headers, captions, or custom patterns • Keep per-book PDF dictionary rules for documents that need manual cleanup • Export reading data as JSON or clear reading data from Settings Privacy and purchase: Drowsebook has no account system, no third-party advertising, no analytics SDKs, and no server dependency for reading or listening. Your imported book files are handled locally on your iPhone. Drowsebook is a one-time purchase utility for reading and listening to your own DRM-free ebooks. The optional supporter tier has the same app access and exists for users who want to support independent development. Family Sharing is enabled. Encrypted books and some newer Kindle variants are not supported. Drowsebook is for digital files only and does not scan paper books.
Delphi
This app provides a synchronized reading and listening experience for classic literature. As the audio plays, the text is highlighted, and you can tap any sentence to resume narration from that exact point. Enjoy offline access to a curated library of timeless works.
- Synchronized text and audio narration
- Tap to play sentence feature
- Offline reading and listening
- Automatic resume functionality
- Bookmark saving
- Background playback
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Delphi is a reader for the great books — with narration that stays in sync with the text. As the audio plays, the current sentence is highlighted and the page scrolls with it. Tap any sentence to hear it from exactly that point. Close the app mid-chapter and Delphi brings you back to the same spot, ready to continue. THE LIBRARY • Thucydides — History of the Peloponnesian War • Augustine — Confessions • Plato — Dialogues (Apology, Phaedo, Symposium, Republic and more) • Goethe — Faust • Aristotle — Nicomachean Ethics and Politics • The Bible (KJV) — Old Testament • Hamilton, Madison, Jay — The Federalist Papers • Machiavelli — The Prince • Dostoevsky — Crime and Punishment MADE FOR LISTENING • Word-for-word sync: the sentence being read is always highlighted • Tap to play: touch any line to jump the narration there • Background playback with full lock screen and Control Center controls • Skip back and forward 15 seconds, scrub anywhere MADE FOR READING • The complete text of every work is built in — no connection needed to read • Download any work's audio once and listen fully offline • Bookmarks for every book: save a passage, jump back to it anytime • Automatic resume: pick up exactly where you stopped, even after restarting No account. No subscription. No ads. Just the classics, read to you.
Screenshots
Verdict
The clearest difference is in-app purchases: Delphi at none against Drowsebook's 2. Delphi also leads on update cadence (every 4 days vs every 2 weeks). On price, ads, device support and iOS requirement 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. Drowsebook sells 2 one-off in-app purchases. Delphi asks for nothing beyond the download.
Drowsebook ships an update every 2 weeks, Delphi every 4 days. Both last shipped on October 31, 2026.
| Parameter | Drowsebook | Delphi |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 255 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | 渊博 胡 | Chenyu Li |
In-app purchases
Drowsebook
- Drowsebook Buy Once$19.99
- Drowsebook Supporter$39.99
Delphi
No in-app purchases









