Understory vs BookWorm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Understory
This app helps you track your reading progress, set goals, and build a consistent reading habit. It features a unique plant aesthetic and allows you to grow real-world trees by meeting reading objectives. Connect with friends, share recommendations, and view insightful reading statistics.
- Log reading progress and books
- Set reading goals and streaks
- Grow real-world trees by meeting objectives
- Connect with friends and join book groups
- Share book recommendations
- View reading statistics and insights
- Organize custom reading lists
Read full descriptionHide full description
Understory is a reading tracker, book tracker, and social reading app designed to help you track books, log reading progress, set reading goals, and stay consistent. Whether you’re organizing your bookshelf, building a reading habit, or joining a book group, Understory brings together everything you need in one place with a fun plant aesthetic. Join the Understory bookish community to build a better reading habit and build a better world! GROW REAL-LIFE TREES: Watch your garden bloom in Understory and meet monthly objectives to grow real-world trees! Visit friends’ gardens daily to help their trees grow! INTERACT WITH FRIENDS: Join book groups where you and your friends can read different books! Like and comment on reviews in the social feed! TRACK YOUR READING: Review your books with half stars, audiobook tags and private reads! Manage your library with custom reading lists including a Did Not Finish (DNF) list! LEVEL UP YOUR READING: Improve your reading habit with leaderboards for books read, reading streaks, and XP level! Earn XP by logging reading and interacting with other users! SHARE BOOK RECS: See your friends’ favorite and highly rated books and share book recommendations directly with your friends! SEE YOUR STATS: Get insights on your reading history and social interactions through shareable stats and graphs and our signature Library Card graphic! Understory is perfect for readers who want to: - Track books and reading progress in one place - Build a daily reading habit and reading streak by growing a fun garden that doesn’t feel like a chore - Log books, reviews, and ratings (with half stars!) - Organize a TBR (to be read) list - Track audiobooks and ebooks - Join a social book community - Discover new book recommendations Terms of Use: https://www.understory-app.com/terms-of-use Privacy Policy: https://www.understory-app.com/privacy-policy Content and Copyright Policy: https://www.understory-app.com/content-copyright-policy
BookWorm
Read full descriptionHide full description
BookWorm is your personal reading companion: a beautiful, private home for every book you read, own or want to read. YOUR LIBRARY, YOUR WAY • Add books in seconds: search online, scan the ISBN barcode with the camera, or enter them by hand • Covers, authors, publishers, genres, series and sagas, with the edition's year and the year of first publication • Organize with collections, or let smart collections fill themselves from rules you define • Import your library from Goodreads or Book Tracker, and export it to CSV at any time TRACK YOUR READING • Log reading sessions with a timer or by hand, by page or by percentage, with a Live Activity on your Lock Screen and Dynamic Island • Keep your current page, notes, ratings and reviews for every book • Set reading goals and follow your streak • Re-read a book and keep every reading in its history SEE THE BIGGER PICTURE • Statistics and charts: books per month, pages, reading time, genres and more • A reading diary and a calendar of the covers you finished • Achievements, levels and badges to keep you motivated MAKE IT YOURS • Widgets for your Home Screen and controls for Control Center • Reader Cards: beautiful, shareable cards for the books you love • Light and dark appearance, with the accent color you prefer PRIVATE BY DESIGN • No account, no ads, no tracking • Your data stays on your device and syncs through your own iCloud • Back up and restore your whole library whenever you want FREE TO START, YOURS FOR GOOD Start free: build your first shelf, with a custom collection and a smart collection, and every essential tool for tracking your reading. When your library grows, a single one-time purchase unlocks BookWorm Premium forever: no subscription, no renewals. It lifts the limits and adds advanced statistics, achievements, widgets, Reader Cards and cover maintenance tools.
Screenshots
Verdict
The clearest difference is update cadence: BookWorm at daily against Understory's every 9 days. Understory's advantage is iOS requirement (16.4 vs 26.0). On price, ads, in-app purchases and device support 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. Understory sells 6 in-app purchases, starting at $4.99 per month and BookWorm sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Understory ships an update every 9 days, BookWorm daily. The most recent releases landed on November 11, 2026 and November 9, 2026 respectively.
| Parameter | Understory | BookWorm |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (63 ratings) — better | — |
| Positive reviews | 95.8% of reviews | — |
| Number of ratings | 63 — better | — |
| Update frequency | Every 9 days | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.4 — better | 26.0 |
| Further details — not scored | ||
| Size | 213 MB | 24 MB |
| Age rating | 12+ | 4+ |
| Developer | Understory Studios LLC | Biagio Paolino |
In-app purchases
Understory
- Understory Premium1 Month trial$4.991 Month
- Understory Premium - Monthly$4.991 Month
- Understory Premium1 Year trial$49.991 Year
Show 1 moreShow fewer
- Understory Premium - Yearly$49.991 Year
- Streak Freeze$0.99
- Streak Restore$0.99
BookWorm
- BookWorm Premium Lifetime$12.99








