Yondazo vs Memories
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Yondazo
Track your reading progress with detailed charts and insights. Log books, add notes, and visualize your reading journey over time. Offers on-device AI analysis for private habit discovery.
- Monthly, yearly, and all-time reading charts
- On-device AI reading habit analysis
- Book notes, ratings, and genre tagging
- Visual bookshelf with cover grid or list view
- Barcode scanning for quick book entry
- Data backup and transfer
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Yondazo is a reading log app that helps you track every book you finish and reflect on your reading journey from three different angles: monthly totals, year-over-year comparisons, and all-time growth. On Apple Intelligence-compatible devices, you can also get on-device AI insights into your reading habits — fully private, fully local. ■ THREE CHARTS TO VISUALIZE YOUR READING See how much you've read this month with the monthly bar chart, compare this year against last year with the year-over-year view, and watch your reading habit build over time with the cumulative line chart. Switch between the three views to look back on your reading journey from every angle. ■ AI READING INSIGHTS, PROCESSED ON-DEVICE On Apple Intelligence-compatible devices, on-device AI analyzes your reading habits and surfaces patterns you might not have noticed on your own — favorite genres, go-to authors, and your natural reading rhythm. Everything runs locally on your iPhone. Your reading data never leaves the device and is never sent to any server. It's private AI reading analysis — with nothing ever sent to the cloud. * On devices that don't support Apple Intelligence, you can still explore your reading trends through detailed statistics. ■ NOTES, RATINGS & GENRES FOR EVERY BOOK Jot down your thoughts after finishing a book, give it a 5-star rating, and tag it with a genre. Each entry becomes part of your personal reading journal, so you can revisit what you read and how you felt about it. Bookmark your favorites to find them again with a single tap. ■ A BEAUTIFUL BOOKSHELF, ALL YOURS Every book you add appears in a beautiful cover grid — a bookshelf that's entirely yours, ready to browse anytime. Prefer a cleaner view? Switch to list mode with a single tap. ■ ADD BOOKS IN SECONDS WITH BARCODE SCAN Just point your camera at a book's barcode. The title, author, publisher, and cover are added automatically — no tedious typing required. For older titles without a barcode, you can search and add them by title. ■ YOUR DATA, SAFE AND PORTABLE Your reading history matters. That's why Yondazo gives you the tools to keep it safe. • Full backup and restore (JSON format) • Seamless data transfer when you switch devices • Automatic migration from older versions ■ WHO IT'S FOR • Readers who want a simple way to log the books they finish • Anyone curious about how many books they read each month • People who like comparing this year's reading with last year's • Readers who enjoy reflecting on their habits through data • Anyone who wants AI to help them spot patterns in their reading • Readers who like keeping notes and impressions of each book
Memories
Track your Tokyo Metro Tozai Line train rides, noting train types and origins. View station timetables and real-time operational status. Share your ride history and discover train formation rankings. Supports Apple Watch.
- Ride logging and history viewing
- Train formation rankings
- Real-time operational status
- Full network timetables
- Apple Watch support
- Ride sharing
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ご覧いただきありがとうございます。 ◆ アプリ概要 Memoriesは東京メトロ東西線の乗車記録をつけるアプリです。 私たちは通勤や遊びに行ったりするときに電車を日々利用しています。 でも・・・ やって来た車両の種類やどこからやって来てどこが終点なのかあんまり意識していないですよね。 この車両ってトレインビジョンあったっけ?車内放送変わった?など日々変化しています。 電車に乗るときに少し利用する駅や車両について意識してみませんか? 乗車記録をつけてみることで日々のくらしの質が変わるかもしれません。 合わせて各駅の時刻表や運行状況も確認できるようにしました。 バージョン 1.1.0 より東京メトロ全線の時刻表が確認できるようになりました。 バージョン 1.2.0 より Apple Watch に対応しました。 ◆ 機能一覧 アプリの機能一覧は下記となります。 各機能の説明はサポートページを参照してください。 ・乗車記録閲覧 ・乗車記録登録 ・乗車記録閲覧・編集 ・乗車記録削除 ・乗車記録のシェア ・編成別乗車ランキング ・編成別乗車記録確認 ・東京メトロ運行状況確認 ・東京メトロ全9路線各駅時刻表閲覧 ・東西線駅マップ ・アプリお知らせ ◆ 利用している API について 東京メトロ運行状況,東京メトロ全9路線各駅時刻表取得には, 公共交通オープンデータセンターの提供するAPIを利用しています。 詳しくは下記サイトをご覧ください。 https://developer.odpt.org 公共交通事業者により提供されたデータを元にしていますが,必ずしも正確・完全なものとは限りません。 本アプリケーションの表示内容について,公共交通事業者への直接の問い合わせは行わないでください。 本アプリケーションに関するお問い合わせは,以下の項のフィードバックを参照の上でお願いいたします。 ◆ フィードバックについて アプリの設定タブのフィードバックから送信可能です。 バグを見つけた場合はお気軽にお問い合わせください。 機能追加や改善の提案も大歓迎です。 現在は乗車の記録は東西線のみですが他路線展開も考えてはいます。
Screenshots
Verdict
The clearest difference is rating: Yondazo at 5.0 against Memories's 4.0. Memories's advantage is monetization model (free vs ad-supported) and iOS requirement (15.0 vs 18.0). On price, ratings volume, update cadence and ads 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. Neither carries in-app purchases, so what you see is what you pay.
Yondazo holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Yondazo ships an update every 6 months, Memories every 5 months. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.
| Parameter | Yondazo | Memories |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 6 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad | iPhone, iPod, Apple Watch — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 66 MB |
| Age rating | 4+ | 4+ |
| Developer | arakawa yuichiro | Takuya Aso |
Customer experience
Yondazo
Memories
In-app purchases
Yondazo
No in-app purchases
Memories
No in-app purchases









