# 数学図鑑 vs ウルトラsukekennウルトラ

The clearest difference is in-app purchases: ウルトラsukekennウルトラ at none against 数学図鑑's 2. ウルトラsukekennウルトラ also leads on ads (none vs shown) and update cadence (every 2 days vs every 2 weeks). On price there is nothing between them.

Both are free to download. 数学図鑑 sells 2 one-off in-app purchases. ウルトラsukekennウルトラ asks for nothing beyond the download.

数学図鑑 ships an update every 2 weeks, ウルトラsukekennウルトラ every 2 days. The most recent releases landed on October 8, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | 数学図鑑 | ウルトラsukekennウルトラ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 149 MB | 77 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Keisuke Minami](https://appshunter.io/developer/1719444621) | [HAYATO OGAWA](https://appshunter.io/developer/1853462570) |

## What reviewers say

### 数学図鑑

[App page](https://appshunter.io/ios/app/id6499109813)

This app uses animations and dynamic visuals to explain complex high school math concepts. It aims to make abstract ideas intuitive and engaging for students and educators alike. Explore calculus, geometry, and equations through visual learning.

**Highlights:** Animated explanations of math concepts, Dynamic visual representations, Covers calculus, geometry, and equations, Intuitive understanding of abstract ideas, Aids students and educators

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告の削除 | $1.99 | one-time |
| 広告の削除+開発者への支援 | $2.99 | one-time |


### ウルトラsukekennウルトラ

[App page](https://appshunter.io/ios/app/sukekenn/id6785628788)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 数学図鑑 free?

数学図鑑 is free to download, with in-app purchases available.

### Is ウルトラsukekennウルトラ free?

ウルトラsukekennウルトラ is free to download, with no in-app purchases.

### Do 数学図鑑 or ウルトラsukekennウルトラ have ads?

数学図鑑 shows ads; ウルトラsukekennウルトラ does not.

### Which is updated more often, 数学図鑑 or ウルトラsukekennウルトラ?

数学図鑑 ships an update every 2 weeks, and ウルトラsukekennウルトラ every 2 days. Most recently, 数学図鑑 was updated on October 8, 2026 and ウルトラsukekennウルトラ on October 10, 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.*