Understory vs Readerly
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
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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
Readerly
Track your reading habits with detailed statistics and insights. Log books, notes, and quotes, and visualize your reading life over time. Offers advanced analytics for a deeper understanding of your literary journey.
- Detailed reading statistics
- Private notes and quotes
- Book pace and projection
- Barcode scanning
- Import from various file types
- Advanced charts and insights (Pro)
- Customizable library themes
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You know roughly how much you read. Readerly tells you exactly. Readerly turns your reading history into a clear picture of your reading life: how your pace changes through the year, what you reach for, which authors you return to, when you read most, and how this year compares with every year before it. Save Private Notes & Quotes, too, so the parts of a book you want to remember stay with your reading life. No account. No sign-in. Your library stays on your iPhone. WHY THE NUMBERS HOLD UP A chart is only useful if the number under it is right. Audiobooks are counted in hours. Insight cards show the evidence behind what they say: how many sessions contributed, what window was measured, and whether there is enough data to support the result. If there is not, Readerly says so instead of inventing an average. Your reading data also outranks the catalog. If you are on page 628 of a book a database says has 623 pages, Readerly accepts 628 and offers to correct the book length. Reopen any reading session and change the date, pages or minutes. Start and finish dates are yours to set. Correcting your own reading history is never behind Readerly Pro. WITHOUT A SUBSCRIPTION • Three free Library choices: Plain, The Book Dragon and A Distant Kingdom • Unlimited books and reading sessions, stored on your device • Private Notes & Quotes • Haptic quarter-star ratings, so a book can be 4¼ instead of being forced to 4 or 4½ • Searchable genres and custom cover images • Log the page you are actually on, not pages-read arithmetic • Live reading pace and projected finish date for every active book • Barcode scanning • Bookstore Mode: continuously scan shelves and instantly see whether a book is already yours or already read • Import from CSV, TSV, XLSX or ZIP • Preview every addition, update and conflict before anything is saved • Readerly reconstructs your reading history from dates in your file, marks estimated dates, and lets you undo the entire import with one tap • Optional AI Import Assistant for messy or unfamiliar exports • Cover and description lookup for books missing metadata • Books Finished, Day Streak, Pages Read and Minutes Read • Two charts on your real numbers: Books Finished by Month and print, digital and audio mix • Explore your reading by year • Share cards as square images or silent 9:16 videos READERLY PRO Readerly Pro turns your log into a deeper view of how you actually read. It also includes fourteen additional Library wallpapers. Unlock deeper charts and insights, including reading momentum, daily rhythm, the hours and weekdays you read, genre currents, per-book reading journeys, genre mix, rating shape, author affinity, completion patterns, length versus rating, a six-axis taste profile, and a deck of the strongest insights your history can support. Choose any month and tap pages or listening bars to see the books behind your totals. Tap a rating, author or genre to see the books behind the number. Share your reading highlights. PRIVATE BY DESIGN Your books, sessions, ratings, notes, quotes, dates and progress live in a private database on your iPhone. Book lookup sends only what identifies the book, such as an ISBN or title and author. No ads. No third-party analytics. No tracking. AI IS OPTIONAL Readerly includes two optional AI tools on the import screen, and neither runs unless you ask. It can send titles and authors of uncategorized books to Anthropic's Claude to suggest a genre from Readerly's fixed list, or send your file's column names and limited samples to suggest how they map. Readerly asks first and tells you what will be sent. Readerly Pro is an auto-renewing monthly or yearly subscription at the price shown before purchase. Cancel any time in your Apple Account settings. Privacy Policy: https://thereaderlyapp.com/privacy/ Terms of Use: https://thereaderlyapp.com/terms/
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Verdict
The clearest difference is ratings volume: Understory at 65 against Readerly's 2. Understory also leads on iOS requirement (16.4 vs 18.0). Readerly's advantage is rating (5.0 vs 4.8) and review sentiment (100% vs 88%). On price, update cadence, ads and in-app purchases 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 Readerly sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Readerly holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Understory has 65 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 88% of Understory's written reviews are positive against 100% of Readerly's.
Both ship on a similar rhythm, roughly every 8 days. The most recent releases landed on November 13, 2026 and November 6, 2026 respectively.
| Parameter | Understory | Readerly |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (65 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 88.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 65 — better | 2 |
| Update frequency | Every 8 days | Every 8 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone | iPhone |
| Requires iOS | 16.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 213 MB | 36 MB |
| Age rating | 12+ | 12+ |
| Developer | Understory Studios LLC | Jovanne Villarino |
Customer experience
Understory
Readerly
In-app purchases
Understory
- Understory Premium1 Month trial$4.991 Month
- Understory Premium - Monthly$4.991 Month
- Understory Premium1 Year trial$49.991 Year
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- Understory Premium - Yearly$49.991 Year
- Streak Freeze$0.99
- Streak Restore$0.99
Readerly
- Readerly Pro Monthly$4.991 Month
- Readerly Pro Yearly$39.991 Year









