9x9カード vs Math Card App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
9x9カード
This app helps children learn multiplication tables with interactive flashcards. It offers various modes, including random quizzes and challenges, and allows customization of pronunciation for multiplication facts. It's designed to make learning multiplication engaging and effective.
- Interactive flashcards
- Customizable pronunciation
- Multiple learning modes
- Randomized quizzes
- Multiplication challenges
- Progress tracking
Read full descriptionHide full description
シンプルな九九カードのアプリです カードのタップで答えを表示、スワイプで次の問題が表示されます 九九の読み方も表示します 初期設定の読み方は変更することができるので、通っている学校で教わっている読み方に変更できます 例）はちしさんじゅうに --> はっしさんじゅうに 4つモードを用意しています ・全部の九九 ・段の選択 ・ランダム50問 ・九九チャレンジ（答えを入力しながら九九にチャレンジ） ぜひお子さまの九九学習にお役立てください！
Math Card App
This app offers a straightforward way to practice calculations using customizable digital cards. It includes a history feature to track your study progress, points, and time spent, allowing for focused improvement on challenging problems.
- Customizable calculation cards
- History of study sessions
- Track study date, time, and points
- Focus on weak areas
- Create problems based on skill level
Read full descriptionHide full description
It is a simple calculation card application. It supports addition, subtraction, multiplication, and division. Features ・ History function The date and time of study, points, and time taken are recorded in the history, so you can check the achievements later. ・ Calculation card editing function Since you can edit the contents of the calculation card by specifying the range, you can intensively study the problems you are not good at or create difficult problems according to your level.
Screenshots
Verdict
The clearest difference is in-app purchases: Math Card App at none against 9x9カード's 1. Math Card App also leads on review sentiment (100% vs 81%) and iOS requirement (13.0 vs 16.6). 9x9カード's advantage is update cadence (every 5 months vs every 14 months). On price, ads, monetization model 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. 9x9カード sells 1 one-off in-app purchase. Math Card App asks for nothing beyond the download.
9x9カード ships an update every 5 months, Math Card App every 14 months. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.
| Parameter | 9x9カード | Math Card App |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 81.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 months — better | Every 14 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Kouichi INAFUKU | Satoshi Miura |
Customer experience
9x9カード
Math Card App
In-app purchases
9x9カード
- 機能の追加$1.99
Math Card App
No in-app purchases
