# 9x9カード vs Math Card App

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.

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.

## The numbers

| Metric | 9x9カード | Math Card App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/9x9/id1044979034/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 81.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 14 months |
| Monetization | Free | Free |
| Size | 5 MB | 19 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kouichi INAFUKU](https://appshunter.io/developer/438372899) | [Satoshi Miura](https://appshunter.io/developer/583254123) |

## What reviewers say

### 9x9カード

[App page](https://appshunter.io/ios/app/9x9/id1044979034)

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.

**Highlights:** Interactive flashcards, Customizable pronunciation, Multiple learning modes, Randomized quizzes, Multiplication challenges, Progress tracking

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 機能の追加 | $1.99 | one-time |


### Math Card App

[App page](https://appshunter.io/ios/app/math-card-app/id1573272906)

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.

**Highlights:** Customizable calculation cards, History of study sessions, Track study date, time, and points, Focus on weak areas, Create problems based on skill level

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 9x9カード free?

9x9カード is free to download, with in-app purchases available.

### Is Math Card App free?

Math Card App is free to download, with no in-app purchases.

### Do 9x9カード or Math Card App have ads?

Neither 9x9カード nor Math Card App shows ads.

### Which is updated more often, 9x9カード or Math Card App?

9x9カード ships an update every 5 months, and Math Card App every 14 months. Most recently, 9x9カード was updated on October 9, 2026 and Math Card App on October 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*