# 読書メモ vs 鉄印帳コレクター

The clearest difference is in-app purchases: 鉄印帳コレクター at none against 読書メモ's 1. 読書メモ's advantage is ads (none vs shown) and iOS requirement (12.0 vs 17.6). On price, update cadence and device support there is nothing between them.

Both are free to download. 読書メモ sells 1 one-off in-app purchase. 鉄印帳コレクター asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 読書メモ | 鉄印帳コレクター |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 52.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | Every 3 months |
| Size | 1 MB | 27 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [enaksoft.com](https://appshunter.io/developer/521038978) | [Masaya Kato](https://appshunter.io/developer/458867341) |

## 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 |


### 鉄印帳コレクター

[App page](https://appshunter.io/ios/app/id6762080554)

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

**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 鉄印帳コレクター free?

鉄印帳コレクター is free to download, with no in-app purchases.

### Do 読書メモ or 鉄印帳コレクター have ads?

鉄印帳コレクター shows ads; 読書メモ does not.

### Which is updated more often, 読書メモ or 鉄印帳コレクター?

読書メモ ships an update every 3 months, and 鉄印帳コレクター every 3 months. Most recently, 読書メモ was updated on October 29, 2026 and 鉄印帳コレクター on October 25, 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.*