Comparison

BookGrass vs BookWorm

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

BookGrass

Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

BookGrass4 screens
BookWorm4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. BookWorm sells 3 one-off in-app purchases. BookGrass asks for nothing beyond the download.

UpkeepUpdate frequency

BookGrass ships an update daily, BookWorm every 9 days. The most recent releases landed on November 9, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
BookGrass versus BookWorm: the parameters behind the verdict, then further details
ParameterBookGrassBookWorm
PriceFreeFree
Rating—4.8 (6 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—6 — better
Update frequencyDaily — betterEvery 9 days
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.2 — better
Further details — not scored
Size9 MB27 MB
Age rating4+4+
DeveloperJaeyoung HeoAdam Markocki

In-app purchases

None

BookGrass

No in-app purchases

3 purchases

BookWorm

One-time3
  • An espresso$2.99
  • Coffee & croissant$4.99
  • A week of coffee$9.99

Questions

Is BookGrass free?
BookGrass is free to download, with no in-app purchases.
Is BookWorm free?
BookWorm is free to download, with in-app purchases available.
Do BookGrass or BookWorm have ads?
Neither BookGrass nor BookWorm shows ads.
Which is updated more often, BookGrass or BookWorm?
BookGrass ships an update daily, and BookWorm every 9 days. Most recently, BookGrass was updated on November 9, 2026 and BookWorm on November 5, 2026.

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