Comparison

Yondazo vs nanolog (ナノログ)

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

nanolog (ナノログ)

Features
Read full description

小さなことでも日々の生活のについて気軽にログを残すためのアプリです。 良い習慣を続けたい、悪い習慣をやめたい、そんな時にも日々の生活のログを残すことで役立ちます。 毎日何を食べているか、どんな出来事があったか、「今日はお薬飲んだっけ?」などログを残すことで自分の生活を簡単に振り返りできます。 nanologでは以下のようなことでができます。 1. タグ機能 「ランチ」、「読んだ本」、「映画」、「アイディア」などなんでも好きなタグを作成し、タグ毎にログを残せます。 1つのログに複数のログを残すこともできます。タグで自分のログを整理できます。 2. ログ作成、一覧表示機能 タグ毎にログ一覧を確認したり、全てのログを一覧表示して確認できます。 3. カレンダー機能 カレンダーでは、今日のログをタイムライン形式で見返すことができます。 「あの日何したっけ?」と思ったら日付をタップしてその日のログのタイムラインも確認できます。 4. 検索機能 検索機能もあるため、大事なログを後から検索して見つけることができます。 5. オンライン同期 全てのタグとログは複数端末でオンライン同期できます。 (ゲストアカウントは非対応) 【利用規約】 https://nanolog.app/terms 【プライバシーポリシー】 https://nanolog.app/privacy

Screenshots

Yondazo4 screens
nanolog (ナノログ)4 screens

Verdict

The call

The clearest difference is update cadence: nanolog (ナノログ) at every 5 days against Yondazo's every 6 months. nanolog (ナノログ) also leads on iOS requirement (13.0 vs 18.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Yondazo ships an update every 6 months, nanolog (ナノログ) every 5 days. The most recent releases landed on October 12, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 7 level
Yondazo versus nanolog (ナノログ): the parameters behind the verdict, then further details
ParameterYondazonanolog (ナノログ)
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 6 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.013.0 — better
Further details — not scored
Size7 MB58 MB
Age rating4+4+
Developerarakawa yuichiroGenki Matsui

In-app purchases

None

Yondazo

No in-app purchases

None

nanolog (ナノログ)

No in-app purchases

Questions

Is Yondazo free?
Yondazo is free to download, with no in-app purchases.
Is nanolog (ナノログ) free?
nanolog (ナノログ) is free to download, with no in-app purchases.
Do Yondazo or nanolog (ナノログ) have ads?
Neither Yondazo nor nanolog (ナノログ) shows ads.
Which is updated more often, Yondazo or nanolog (ナノログ)?
Yondazo ships an update every 6 months, and nanolog (ナノログ) every 5 days. Most recently, Yondazo was updated on October 12, 2026 and nanolog (ナノログ) on October 27, 2026.

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