# 記憶KEEPER vs Rail Typing

The clearest difference is in-app purchases: 記憶KEEPER at none against Rail Typing's 3. 記憶KEEPER also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Rail Typing sells 3 in-app purchases, starting at $1.99 per month. 記憶KEEPER asks for nothing beyond the download.

記憶KEEPER ships an update every 3 days, Rail Typing every 2 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | 記憶KEEPER | Rail Typing |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | **Every 2 days** |
| Size | 4 MB | 22 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [nao watanabe](https://appshunter.io/developer/1896686911) | [渭康 吕](https://appshunter.io/developer/1896211147) |

## What reviewers say

### 記憶KEEPER

[App page](https://appshunter.io/ios/app/keeper/id6769772312)

**Features:** macOS Compatibility

**In-app purchases:** none


### Rail Typing

[App page](https://appshunter.io/ios/app/rail-typing-learn-japanese/id6817686826)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rail Pass · Monthly | $1.99 | per month |
| Rail Pass · Yearly | $9.99 | per year |
| Rail Pass · Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is 記憶KEEPER free?

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

### Is Rail Typing free?

Rail Typing is free to download, with in-app purchases available.

### Do 記憶KEEPER or Rail Typing have ads?

Neither 記憶KEEPER nor Rail Typing shows ads.

### Which is updated more often, 記憶KEEPER or Rail Typing?

記憶KEEPER ships an update every 3 days, and Rail Typing every 2 days. Most recently, 記憶KEEPER was updated on November 5, 2026 and Rail Typing on November 10, 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.*