# 暗算Blitz vs Kukuku! 3

The clearest difference is in-app purchases: Kukuku! 3 at none against 暗算Blitz's 1. Kukuku! 3 also leads on ads (none vs shown) and iOS requirement (15.1 vs 17.6). 暗算Blitz's advantage is update cadence (daily vs fortnightly). On price and device support there is nothing between them.

Both are free to download. 暗算Blitz sells 1 one-off in-app purchase. Kukuku! 3 asks for nothing beyond the download.

暗算Blitz ships an update daily, Kukuku! 3 fortnightly. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 暗算Blitz | Kukuku! 3 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Fortnightly |
| Size | 54 MB | 41 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Toshihide KAWAI](https://appshunter.io/developer/1598098272) | [Keita Ide](https://appshunter.io/developer/1804599366) |

## What reviewers say

### 暗算Blitz

[App page](https://appshunter.io/ios/app/blitz/id6741730652)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム・ユーザー | $14.99 | one-time |


### Kukuku! 3

[App page](https://appshunter.io/ios/app/kukuku-3-digit-multiplication/id6759827804)

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

**In-app purchases:** none


## Frequently asked questions

### Is 暗算Blitz free?

暗算Blitz is free to download, with in-app purchases available.

### Is Kukuku! 3 free?

Kukuku! 3 is free to download, with no in-app purchases.

### Do 暗算Blitz or Kukuku! 3 have ads?

暗算Blitz shows ads; Kukuku! 3 does not.

### Which is updated more often, 暗算Blitz or Kukuku! 3?

暗算Blitz ships an update daily, and Kukuku! 3 fortnightly. Most recently, 暗算Blitz was updated on October 20, 2026 and Kukuku! 3 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.*