Quill vs Books Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Quill
This application enhances your reading experience by providing AI-powered definitions, translations, and contextual explanations for any word or passage within your imported EPUB and PDF books. It offers instant insights to deepen comprehension.
- AI-powered explanations
- Instant definitions
- Contextual understanding
- Import EPUB and PDF
- Word and passage lookup
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Quill is an ebook reader with built-in AI that helps you understand what you read. Import your EPUB and PDF books, then tap any word or passage to get instant definitions, translations, and contextual explanations
Books Pro
This app provides a fast and elegant offline reading experience for your books. Keep your entire library on your device for reliable access anytime, anywhere, without needing an internet connection. Organize your reading space, save quotes, and track your progress with ease.
- Reliable offline reading
- One Click access
- Clean personal library
- Book collections
- Reading progress saving
- Quote saving and sharing
- iCloud sync
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Books Pro is a fast, elegant offline reader built around a simple One Click system. Books Pro keeps your books on your device, so they stay available even when there is no internet connection. No surprise downloads, no missing books when you are offline. Your library is ready whenever you want to read. Import your books, open your library, continue reading, save quotes, share progress, and organize your reading space with fewer steps. Books Pró is designed to feel quick, clean, and natural every time you read. Features: - Books stay on your device for reliable offline reading - One Click access to your books and reading tools - Fast offline book reading - Clean personal library - Book collections with custom reading order - Manual book sorting - Reading progress saving - Quote saving and sharing - Tap a quote to jump back to its place in the book - iCloud sync between your devices - Reading time statistics for day, week, and year - Reading streaks and challenges - Custom reading reminders - Beautiful share cards for reading progress - Dark and light mode support - Localized for many languages Books Pro is your personal books space: simple, private, and ready whenever you want to read.
Screenshots
Verdict
The clearest difference is update cadence: Books Pro at every 3 days against Quill's every 9 days. On price, rating, ratings volume and ads 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.
On the App Store both sit at effectively the same score — 5.0 for Quill against 5.0 for Books Pro. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Quill ships an update every 9 days, Books Pro every 3 days. The most recent releases landed on October 23, 2026 and October 31, 2026 respectively.
| Parameter | Quill | Books Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 9 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 | 17 |
| Further details — not scored | ||
| Size | 20 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | 思涵 岳 | Ecologicalm UAB |
Customer experience
Quill
Books Pro
In-app purchases
Quill
No in-app purchases
Books Pro
No in-app purchases
