九九 vs Fun multiplication with Piyo!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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。
Fun multiplication with Piyo!
Learn multiplication through engaging practice problems and a fun game. Earn coins for correct answers to collect items for a virtual bird companion. Enjoy mastering math skills with a friendly character.
- Multiplication practice problems
- Multiplication game with levels
- Coin rewards for correct answers
- Collect bird care items
- Learn with a character companion
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Let's try multiplication with Piyo-chan! Once you have mastered the multiplication, try the practice problems. You can do your best because you are with Piyo-chan. When you gain confidence, try the multiplication game! After selecting a level, a random question will appear. You will receive coins for each correct answer. Use the coins to collect bird care items! Let's have fun learning multiplication with Piyo-chan.
Screenshots
Verdict
The clearest difference is review sentiment: Fun multiplication with Piyo! at 100% against 九九's 0%. Fun multiplication with Piyo! also leads on rating (4.7 vs 2.5) and in-app purchases (none vs 1). On price, update cadence, ads and device support 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. Fun multiplication with Piyo! asks for nothing beyond the download.
Fun multiplication with Piyo! holds the better App Store score, 4.7 against 2.5. That said, the two scores are not equally well evidenced: Fun multiplication with Piyo! has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of 九九's written reviews are positive against 100% of Fun multiplication with Piyo!'s.
九九 ships an update every 5 months, Fun multiplication with Piyo! every 8 months. Both last shipped on October 24, 2026.
| Parameter | 九九 | Fun multiplication with Piyo! |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (2 ratings) | 4.7 (10 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 10 — better |
| Update frequency | Every 5 months — better | Every 8 months |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 109 MB | 148 MB |
| Age rating | 4+ | 4+ |
| Developer | Sumie Watanabe | Rie Takayama |
Customer experience
九九
Fun multiplication with Piyo!
In-app purchases
九九
- 九九アプリバナー広告非表示$1.99
Fun multiplication with Piyo!
No in-app purchases
Questions
Is 九九 free?
Is Fun multiplication with Piyo! free?
Which has better reviews, 九九 or Fun multiplication with Piyo!?
Do 九九 or Fun multiplication with Piyo! have ads?
Which is updated more often, 九九 or Fun multiplication with Piyo!?
Other comparisons
