# 読書貯金｜読んだ本が資産になる読書記録アプリ vs Lastgrain

The clearest difference is in-app purchases: Lastgrain at none against 読書貯金｜読んだ本が資産になる読書記録アプリ's 1. 読書貯金｜読んだ本が資産になる読書記録アプリ's advantage is update cadence (every 6 days vs monthly) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. 読書貯金｜読んだ本が資産になる読書記録アプリ sells 1 one-off in-app purchase. Lastgrain asks for nothing beyond the download.

読書貯金｜読んだ本が資産になる読書記録アプリ ships an update every 6 days, Lastgrain monthly. The most recent releases landed on August 22, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | 読書貯金｜読んだ本が資産になる読書記録アプリ | Lastgrain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Monthly |
| Size | 36 MB | 25 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Miyuki Fujirai](https://appshunter.io/developer/1838371790) | [Takafumi Kawano](https://appshunter.io/developer/1895140586) |

## What reviewers say

### 読書貯金｜読んだ本が資産になる読書記録アプリ

[App page](https://appshunter.io/ios/app/id6756208773)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 読書貯金プレミアム | $5.99 | one-time |


### Lastgrain

[App page](https://appshunter.io/ios/app/lastgrain-life-timer/id6763055021)

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

**In-app purchases:** none


## Frequently asked questions

### Is 読書貯金｜読んだ本が資産になる読書記録アプリ free?

読書貯金｜読んだ本が資産になる読書記録アプリ is free to download, with in-app purchases available.

### Is Lastgrain free?

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

### Do 読書貯金｜読んだ本が資産になる読書記録アプリ or Lastgrain have ads?

Neither 読書貯金｜読んだ本が資産になる読書記録アプリ nor Lastgrain shows ads.

### Which is updated more often, 読書貯金｜読んだ本が資産になる読書記録アプリ or Lastgrain?

読書貯金｜読んだ本が資産になる読書記録アプリ ships an update every 6 days, and Lastgrain monthly. Most recently, 読書貯金｜読んだ本が資産になる読書記録アプリ was updated on August 22, 2026 and Lastgrain on August 31, 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.*