# 九九 vs かけざんアプリ

The clearest difference is in-app purchases: かけざんアプリ at none against 九九's 1. かけざんアプリ also leads on ads (none vs shown) and update cadence (every 5 days vs every 5 months). 九九's advantage is iOS requirement (12.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. 九九 sells 1 one-off in-app purchase. かけざんアプリ asks for nothing beyond the download.

九九 ships an update every 5 months, かけざんアプリ every 5 days. The most recent releases landed on June 5, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 九九 | かけざんアプリ |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 109 MB | 11 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sumie Watanabe](https://appshunter.io/developer/1349237972) | [SHINICHIRO ISHII](https://appshunter.io/developer/1645307968) |

## What reviewers say

### 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 |


### かけざんアプリ

[App page](https://appshunter.io/ios/app/id1645307966)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 九九 free?

九九 is free to download, with in-app purchases available.

### Is かけざんアプリ free?

かけざんアプリ is free to download, with no in-app purchases.

### Do 九九 or かけざんアプリ have ads?

九九 shows ads; かけざんアプリ does not.

### Which is updated more often, 九九 or かけざんアプリ?

九九 ships an update every 5 months, and かけざんアプリ every 5 days. Most recently, 九九 was updated on June 5, 2026 and かけざんアプリ on September 17, 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.*