# Kuku Robo vs 九九

The clearest difference is in-app purchases: Kuku Robo at none against 九九's 1. 九九's advantage is iOS requirement (12.0 vs 15.0). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. 九九 sells 1 one-off in-app purchase. Kuku Robo asks for nothing beyond the download.

Kuku Robo ships an update every 3 months, 九九 every 5 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Kuku Robo | 九九 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.5 (2 ratings)](https://appshunter.io/ios/app/easy/id1611285814/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 57 MB | 109 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MASAHIRO MIZUTANI](https://appshunter.io/developer/368158224) | [Sumie Watanabe](https://appshunter.io/developer/1349237972) |

## What reviewers say

### Kuku Robo

[App page](https://appshunter.io/ios/app/kuku-robo/id562517412)

Master multiplication with a Japanese method called 'Kuku'. This app offers various levels ('Dan') to practice and improve your math skills. It's designed for consistent effort to build a strong foundation in mathematics.

**Highlights:** Learn Kuku multiplication method, Practice with different 'Dan' levels, Improve math skills, Track progress through practice, Designed for consistent effort

**Features:** Vision Pro support

**In-app purchases:** none


### 九九

[App page](https://appshunter.io/ios/app/easy/id1611285814)

This app offers a comprehensive multiplication and word problem learning experience with randomized practice questions. It includes a review mode for incorrect answers and is free to use with optional ad removal via in-app purchase.

**Highlights:** Randomized multiplication problems, Word problem practice, Review mode for incorrect answers, Calendar feature, Name and icon display for submissions

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 九九アプリバナー広告非表示 | $1.99 | one-time |


## Frequently asked questions

### Is Kuku Robo free?

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

### Is 九九 free?

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

### Do Kuku Robo or 九九 have ads?

Both Kuku Robo and 九九 show ads.

### Which is updated more often, Kuku Robo or 九九?

Kuku Robo ships an update every 3 months, and 九九 every 5 months. Most recently, Kuku Robo was updated on November 1, 2026 and 九九 on November 3, 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.*