# 計算カード Ext vs 九九

The clearest difference is in-app purchases: 計算カード Ext at none against 九九's 1. 計算カード Ext also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. 九九 sells 1 one-off in-app purchase. 計算カード Ext asks for nothing beyond the download.

計算カード Ext ships an update every 4 months, 九九 every 5 months. The most recent releases landed on September 6, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | 計算カード Ext | 九九 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/easy/id1611285814/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 109 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ryo itou](https://appshunter.io/developer/1435019729) | [Sumie Watanabe](https://appshunter.io/developer/1349237972) |

## What reviewers say

### 計算カード Ext

[App page](https://appshunter.io/ios/app/ext/id1436261840)

**Features:** macOS Compatibility, 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 計算カード Ext free?

計算カード Ext 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 計算カード Ext or 九九 have ads?

九九 shows ads; 計算カード Ext does not.

### Which is updated more often, 計算カード Ext or 九九?

計算カード Ext ships an update every 4 months, and 九九 every 5 months. Most recently, 計算カード Ext was updated on September 6, 2026 and 九九 on June 5, 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.*