Storybase vs Delphi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Storybase
This app offers an interactive reading and listening experience for books, connecting readers directly with authors. Authors can engage their audience, track engagement, and build relationships beyond the book itself.
- Immersive audiobook/ebook sync
- In-app AI questions
- Shareable chapters
- Author-reader connection
- Reader engagement tracking
- Customizable offers
- AI prompts for readers
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Storybase helps authors build relationships with their readers, and helps readers engage deeper with books through an immersive and interactive experience. FOR READERS A new way to experience audiobooks and ebooks: immersive, interactive, and connected to the author every step of the way. • Immersive: switch between audiobook and ebook, read and listen in sync, and play soundtracks for exercising, learning, or relaxing. • Interactive: ask the book questions with built-in AI, and share chapters with the people who need them. • Connected: stay close to the author and their world, from the first page to the last. FOR AUTHORS What if your book was the beginning, not the end? • Reach: get your book into more hands with instant share links and customizable offers. • Engage: see who reads, listens, and finishes, and drop AI prompts and calls to action right into the experience. • Activate: turn attention into relationships. Capture contacts and guide readers to your real next step. • Multiply: turn your team, clients, and readers into ambassadors who pass the book forward. A book should do more than sit on a shelf. It is the door into everything you do next. Use of this app is bound by the Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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 Storybase's 3. On price, rating, ratings volume and update cadence 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. Storybase sells 3 in-app purchases, starting at $17.99 per month. Delphi asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Storybase against 5.0 for Delphi. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Storybase ships an update every 5 days, Delphi every 4 days. Both last shipped on October 13, 2026.
| Parameter | Storybase | Delphi |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 5 days | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 9 MB | 18 MB |
| Age rating | 12+ | 4+ |
| Developer | Storyline Creative, LLC | Chenyu Li |
Customer experience
Storybase
Delphi
In-app purchases
Storybase
- Reader Premium$17.991 Month
- Author Plus$107.991 Month
- Author Pro$214.991 Month
Delphi
No in-app purchases









