Kuku Robo vs 九九
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Kuku Robo
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.
- Learn Kuku multiplication method
- Practice with different 'Dan' levels
- Improve math skills
- Track progress through practice
- Designed for consistent effort
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Let’s learn the multiplication method called 'Kuku'. This is the secret why Japanese guys have a good track record of mathematics. It's important to keep trying on the Kuku, so this app is for you. You can choose several rows called 'Dan' as you like. Have fun with Kuku!
九九
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.
- Randomized multiplication problems
- Word problem practice
- Review mode for incorrect answers
- Calendar feature
- Name and icon display for submissions
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-多くの教育機関でもご好評いただいています- 2.0 追加機能 カレンダー なまえとアイコンを表示できる機能（スクリーンショットで宿題を提出する際などにご活用ください 九九やかけ算の問題がたくさん詰まったアプリです。 問題はランダムで作成されるので、何度でも繰り返し学習できます。 間違った問題だけを集めた復習モードを搭載！ 苦手な段の克服に役立ちます。 全て無料でお使いいただけます。 画面下部にバナー広告が挿入されます。 アプリ内購入でバナー広告を非表示にできます。
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Kuku Robo | 九九 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.5 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 3 months — better | Every 5 months |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 57 MB | 109 MB |
| Age rating | 4+ | 4+ |
| Developer | MASAHIRO MIZUTANI | Sumie Watanabe |
Customer experience
Kuku Robo
九九
In-app purchases
Kuku Robo
No in-app purchases
九九
- 九九アプリバナー広告非表示$1.99
