BookGrass vs BookWorm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BookGrass
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Build your reading habit, one tap at a time. BookGrass is the simplest way to track your daily reading. No complicated features, no book databases to manage – just tap when you read and watch your grass grow. ■ SIMPLE TRACKING Tap once to mark today as read. That's it. No page counts, no timers, no lengthy forms. Reading should be enjoyable, and so should tracking it. ■ VISUALIZE YOUR PROGRESS See your reading history as a beautiful grass grid. Each green square represents a day you read. Watch your garden grow over 3 months and feel the satisfaction of building a habit. ■ STAY MOTIVATED - Track your current reading streak - See your total reading days - Don't break the chain – keep your grass alive! ■ POWERFUL WIDGETS Add BookGrass widgets to your home screen: - Small: This week's progress + streak count - Medium: One month view - Large: Full 3-month grass grid with stats Tap directly on widgets to record your reading without even opening the app. ■ SHARE YOUR ACHIEVEMENT Proud of your reading streak? Share your grass grid image with friends and inspire others to read more. ■ PRIVACY FIRST All your data stays on your device. No account required, no data collection. --- Start growing your reading grass today. One tap, one day, one book at a time.
BookWorm
This app helps you build a consistent reading habit by tracking books, ebooks, and audiobooks. Set daily goals, maintain streaks, and organize your library. It offers gentle reminders and progress insights to encourage more reading.
- Daily reading goals (pages/minutes)
- Reading streak tracking
- Log print books, ebooks, and audiobooks
- Organize library (Reading, To Read, Finished)
- Reading timer
- Monthly progress recaps
- Shareable reading stats
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Turn "I should read more" into a daily habit. BookWorm is a calm, beautiful reading tracker for books, ebooks and audiobooks. Set a daily goal, build a streak and watch your reading grow. BUILD A READING HABIT • Set a daily goal in pages or minutes • Keep your streak alive and earn reading quests • See every reading day on your calendar • Gentle reminders, at the time you choose BOOKS AND AUDIOBOOKS, IN ONE PLACE • Log pages for print books and ebooks • Log listening time for audiobooks • Both count toward the same daily goal YOUR WHOLE LIBRARY • Organise your shelf: Reading, To Read and Finished • Import your existing library from a CSV file • Add notes to every book STAY FOCUSED • Start the reading timer with one tap • Pick up right where you left off from Home SEE YOUR PROGRESS • A Monthly Recap of every month you read • Books finished, pages read and hours listened • Your best streak and favourite genres SHARE WHAT YOU READ • Beautiful share cards for every finished book • Share your Monthly Recap in one tap BUILT FOR EVERY SCREEN • Optimised for iPhone Duo: your shelf and your book, side by side • iPhone and iPad, synced with iCloud • Home Screen and Lock Screen widgets • Four themes: Light, Dark, Retro and Marginalia • Available in 9 languages Made by an independent developer. If you love BookWorm, an optional tip helps keep it growing.
Screenshots
Verdict
The clearest difference is in-app purchases: BookGrass at none against BookWorm's 3. BookGrass also leads on update cadence (daily vs every 9 days). 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. BookWorm sells 3 one-off in-app purchases. BookGrass asks for nothing beyond the download.
BookGrass ships an update daily, BookWorm every 9 days. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.
| Parameter | BookGrass | BookWorm |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (6 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 6 — better |
| Update frequency | Daily — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.2 — better |
| Further details — not scored | ||
| Size | 9 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Jaeyoung Heo | Adam Markocki |
In-app purchases
BookGrass
No in-app purchases
BookWorm
- An espresso$2.99
- Coffee & croissant$4.99
- A week of coffee$9.99









