Leaf vs Cat On Book
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Leaf
This app helps you build a consistent reading habit by tracking your progress, setting daily goals, and offering reading challenges. It provides visual progress indicators and smart book management features, including barcode scanning and Goodreads import. Advanced features like AI assistant integration are available with a Pro subscription.
- Daily reading streak tracking
- Flexible and fixed date goal setting
- Reading challenges with progress calculation
- Visual progress indicators
- Barcode scanning for book lookup
- Goodreads library import
- AI assistant integration (Pro)
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Stop starting books you never finish. Leaf turns reading into a daily habit. Without the guilt. Track progress page by page, set a daily goal, and build the streak that keeps you reading. Or set a reading challenge: pick a few books, pick a finish date, and Leaf tells you how many pages to read each day. The first reading tracker connected to your AI assistant (Pro). READING STREAKS Build a consistent reading habit: - Daily streak counter with a weekly reading calendar - 3-hour grace period for late-night reading sessions - Missed a day? One tap to backdate yesterday's reading. No guilt, no penalty - Nine milestone levels from Sprout to Ancient, earned permanently even if your streak resets DUAL GOAL-SETTING MODES Choose the approach that fits your style: - Flexible Mode - set pages per day, Leaf calculates your finish date "I want to read 20 pages daily" - Fixed Date Mode - set a target date, Leaf calculates daily pages "I want to finish by March 15" READING CHALLENGES "5 books in 3 months." Leaf does the math. - Pick your books, pick a finish date - Leaf tells you how many pages to read today - Read extra today, and tomorrow's number goes down - Fall behind, and the number just updates. No penalty - Every week, an email and a notification with how you're doing - Finish, and get a recap you can share Reading challenges come with the Challenge Pass (3 months) or Leaf Pro. It's private. Just you and your books, no leaderboard. VISUAL PROGRESS TRACKING See exactly where you are and how far to go: - Circular progress indicator for each book - Quick-adjust buttons (−5, −1, +1, +5, +10) to log pages in seconds - Updates in one tap, not minutes ASK YOUR AI ASSISTANT (PRO) Your reading data is available via an MCP server: - "What am I reading?" Get your current book and progress - "Log 30 pages of my current book" updates without opening the app - "Add Atomic Habits, 320 pages" adds new books by voice or chat - Works with any MCP-compatible AI assistant Requires Leaf Pro. Set up at readwithleaf.app/integrations. HOME SCREEN WIDGETS Your reading at a glance, without opening the app: - Progress ring widget with today's streak and page goal - Book widget showing your current read and progress - Lock screen widget for quick check-ins SMART BOOK MANAGEMENT Add books in seconds: - Scan a barcode for instant lookup - no typing required - Search by title or ISBN - title, author, page count, and cover auto-filled - Import your Goodreads library in one step - bring your reading history with you - Manual entry for any book not in the database - Finish a book in a series? Leaf finds the next volume for you - Share a completion card when you finish a book - Bookshelf organized by currently reading, TBR, finished, and dropped READING JOURNAL Your complete reading history: - Current streak and all-time longest streak - Total pages read and books completed - Full stats for every book you finish: days taken, pages per day, best reading day - Book notes and quotes, saved by page - Export your book list to CSV anytime WHY READERS LOVE LEAF Free to use - tracking, streaks, goals, stats and import, no strings attached Works fully offline - no account required Dark-first design - comfortable for evening reading Available in 16 languages Works on iPhone and iPad LEAF PRO An optional upgrade for readers who want more: - Reading challenges (also sold on their own as a 3-month Challenge Pass) - Cloud sync across all your devices - Automatic backup - never lose your reading data - Ad-free experience - AI assistant integration (MCP server) - Cancel anytime PERFECT FOR - Readers who start more books than they finish - Anyone building a reading habit, one page at a time - Anyone building a reading journal and TBR list - Busy people fitting reading into a packed schedule - Goodreads users looking for a focused, offline-first alternative One page at a time.
Cat On Book
Organize your reading, track your progress, and build a reading habit with a virtual cat companion. Set reading goals, create a cozy atmosphere with ambient sounds, and journal your thoughts. Read solo or with friends.
- Organize book library
- Timed reading sessions
- Ambient soundscapes
- Reading journal
- Read with friends
- Yearly reading goals
- Unlockable cat companions
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Make time for your next chapter, with a cat by your side. Cat On Book is a cozy book tracker and reading companion that helps you organize your books, focus on your reading, and build a habit at your own pace. Pick a book, start a session, and let your little companion settle in beside you. Read on your own or share a quiet moment with friends, each with your own book. - Organize your library: keep track of what you want to read, what you're reading, and what you've finished. - Make time to read: choose a timed session or read without a time limit. - Create your atmosphere: mix ambient sounds, from rain to cat purring. - Keep a reading journal: save quotes, take notes, and capture your thoughts, with page or chapter references. - Read with friends: add your friends and join each other's open reading sessions. - Build your routine: set a yearly reading goal and choose reminders that fit your day. - Find your favorite companion: earn fish as you read and use them to unlock new cats. Cat On Book Pro adds detailed reading charts, a session timeline, more ambient sounds, exclusive customization, and double fish rewards. Pick up your book. Your cat is waiting. Terms of Use (EULA) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: Cat On Book at none against Leaf's shown. Cat On Book also leads on update cadence (every 3 days vs weekly). On price, review sentiment, in-app purchases and monetization model 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. Leaf sells 7 in-app purchases, starting at $2.99 per month and Cat On Book sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Leaf ships an update weekly, Cat On Book every 3 days. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.
| Parameter | Leaf | Cat On Book |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (11 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 11 — better | — |
| Update frequency | Weekly | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.4 | 16.4 |
| Further details — not scored | ||
| Size | 86 MB | 254 MB |
| Age rating | 4+ | 4+ |
| Developer | Vincent Ballut | Gramos Imeri |
Customer experience
Leaf
Cat On Book
In-app purchases
Leaf
- Leaf Pro Monthly$2.991 Month
- Leaf Pro Annual7 Days trial$24.991 Year
- Leaf Pro Annual1 Year trial$24.991 Year
- Small$1.99
- Medium$4.99
- 3-Month Challenge Pass$9.99
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- Large$9.99
Cat On Book
- Pro Monthly7 Days trial$2.991 Month
- Pro Annual7 Days trial$17.991 Year
- Lifetime$29.99









