# Unlock a Code vs 都道府県かるたタイムアタック

The clearest difference is ads: 都道府県かるたタイムアタック at none against Unlock a Code's shown. Unlock a Code's advantage is update cadence (fortnightly vs every 42 months) and iOS requirement (10.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

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

Unlock a Code ships an update fortnightly, 都道府県かるたタイムアタック every 42 months. The most recent releases landed on October 4, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Unlock a Code | 都道府県かるたタイムアタック |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 42 months |
| Size | 182 MB | 40 MB |
| Requires iOS | **10.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [1st-impact co.,ltd.](https://appshunter.io/developer/438027937) | [Naoya Sato](https://appshunter.io/developer/1629194164) |

## What reviewers say

### Unlock a Code

[App page](https://appshunter.io/ios/app/unlock-a-code/id1567165987)

**Features:** macOS Compatibility

**In-app purchases:** none


### 都道府県かるたタイムアタック

[App page](https://appshunter.io/ios/app/id1635012470)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unlock a Code free?

Unlock a Code is free to download, with no in-app purchases.

### Is 都道府県かるたタイムアタック free?

都道府県かるたタイムアタック is free to download, with no in-app purchases.

### Do Unlock a Code or 都道府県かるたタイムアタック have ads?

Unlock a Code shows ads; 都道府県かるたタイムアタック does not.

### Which is updated more often, Unlock a Code or 都道府県かるたタイムアタック?

Unlock a Code ships an update fortnightly, and 都道府県かるたタイムアタック every 42 months. Most recently, Unlock a Code was updated on October 4, 2026 and 都道府県かるたタイムアタック on October 12, 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.*