# 読書メモ vs Yondazo

The clearest difference is in-app purchases: Yondazo at none against 読書メモ's 1. 読書メモ's advantage is update cadence (every 3 months vs every 32 months) and iOS requirement (12.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. 読書メモ sells 1 one-off in-app purchase. Yondazo asks for nothing beyond the download.

読書メモ ships an update every 3 months, Yondazo every 32 months. The most recent releases landed on July 19, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 読書メモ | Yondazo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/yondazo-reading-tracker/id1547099179/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 32 months |
| Monetization | — | Ad-supported |
| Size | 1 MB | 7 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | +4 |
| Developer | [enaksoft.com](https://appshunter.io/developer/521038978) | [arakawa yuichiro](https://appshunter.io/developer/421879127) |

## What reviewers say

### 読書メモ

[App page](https://appshunter.io/ios/app/id541494849)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| データ追加の回数制限解除 | $1.99 | one-time |


### Yondazo

[App page](https://appshunter.io/ios/app/yondazo-reading-tracker/id1547099179)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 読書メモ free?

読書メモ is free to download, with in-app purchases available.

### Is Yondazo free?

Yondazo is free to download, with no in-app purchases.

### Do 読書メモ or Yondazo have ads?

Neither 読書メモ nor Yondazo shows ads.

### Which is updated more often, 読書メモ or Yondazo?

読書メモ ships an update every 3 months, and Yondazo every 32 months. Most recently, 読書メモ was updated on July 19, 2026 and Yondazo on September 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*