TumuBook vs Readlogger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TumuBook
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The books they grew up with. TumuBook is a reading log for parents and kids. Keep every book your child reads, with the date and how old they were. "The picture book they asked for again and again as a baby." "The book they practised reading with in first grade." Books carry a picture of who your child was at the time. Note what they read, when, and how old they were, and the record becomes a memory in itself. One book finished, and what next? With no time to look, or no quick trip to the library or bookshop, that eagerness to keep reading can quietly fade. TumuBook lays out what might come next from the books they've read: "if they loved this one, here are a few more." A natural moment to ask, "Want to try this one?" SECONDS TO LOG. YOURS TO KEEP. - Scan the barcode to add a book - The date and your child's age are saved automatically - Add a note if you like - Browse each shelf by age or by month A SHELF FOR EACH CHILD - A separate shelf for every child - Whatever the age gap, all in one app MORE TIME WITH BOOKS - Picks like "Because you read…" and "More by the same author" appear on the Home, grown from the books they've read - Save the ones to read next, and check the list on your next trip to the library or bookshop SERIES AND NEW RELEASES - See every volume of a series, with a tick on the ones they've read - The next volume shows up on the Home - We keep an eye on new releases in the series they read WORKS ON IPHONE AND IPAD Made for parents who want to: - keep the books their child reads as memories - log every sibling's reading in one place - spend less time hunting for the next book - keep track of library books as well as their own
Readlogger
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Biblion helps you record books you've read and manage action declarations inspired by your reading. Key Features: ・Library: Add books, write notes, rate them, and track reading dates ・Tasks: Register up to 4 action declarations from your reading and log daily completion ・Home: View your reading stats at a glance (books read, total reading time) ・Weekly Stats: Review your task completion rate week by week Terms of Service: https://it-master.jp/biblion/terms-en.html
Screenshots
Verdict
The clearest difference is in-app purchases: TumuBook at none against Readlogger's 3. TumuBook also leads on ads (none vs shown). Readlogger's advantage is update cadence (every 2 days vs every 3 weeks) and iOS requirement (16.0 vs 18.0). On price 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. Readlogger sells 3 in-app purchases, starting at $2.99 per month. TumuBook asks for nothing beyond the download.
TumuBook ships an update every 3 weeks, Readlogger every 2 days. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.
| Parameter | TumuBook | Readlogger |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 6 MB |
| Age rating | 4+ | 17+ |
| Developer | Tomoko Okada | Koji Isano |
In-app purchases
TumuBook
No in-app purchases
Readlogger
- Basic Plan$2.991 Month
- Premium Plan$5.991 Month
- 45 Tickets$9.99









