# iPSマスター vs SOINSU math puzzle

The clearest difference is in-app purchases: iPSマスター at none against SOINSU math puzzle's 2. iPSマスター also leads on ads (none vs shown) and iOS requirement (8.0 vs 12.0). SOINSU math puzzle's advantage is update cadence (weekly vs every 4 months) and review sentiment (90% vs 80%). On price there is nothing between them.

Both are free to download. SOINSU math puzzle sells 2 one-off in-app purchases. iPSマスター asks for nothing beyond the download.

iPSマスター ships an update every 4 months, SOINSU math puzzle weekly. Both last shipped on October 17, 2026.

## The numbers

| Metric | iPSマスター | SOINSU math puzzle |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 80.0% of reviews | **90.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 684 MB | 105 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [KYOTO UNIVERSITY](https://appshunter.io/developer/736070990) | [GAIBAKO co., Ltd.](https://appshunter.io/developer/1548482925) |

## What reviewers say

### iPSマスター

[App page](https://appshunter.io/ios/app/ips/id1073322395)

Experience the groundbreaking discovery of iPS cells by stepping into the shoes of a researcher. This interactive iPad app allows you to recreate the simple yet beautiful experiments that led to this Nobel Prize-winning achievement. Embark on a journey to understand and create iPS cells.

**Highlights:** Recreate iPS cell discovery experiments, Interactive simulation, Learn about iPS cell research, Educational gameplay, Designed for iPad

**Features:** macOS Compatibility

**In-app purchases:** none


### SOINSU math puzzle

[App page](https://appshunter.io/ios/app/soinsu-math-puzzle/id6444055103)

Engage in a brain-training puzzle game focused on prime factorization. Anyone can learn the fun of numbers through this simple, time-killing activity. Enjoy the challenge of dividing numbers into prime factors with a high-tempo soundtrack.

**Highlights:** Prime factorization gameplay, Brain training puzzles, Mental arithmetic practice, Cyber visuals, Trance music soundtrack, Multiple game modes, Prime number collection

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add no time limit mode | $0.99 | one-time |
| Hidden Ads | $2.99 | one-time |


## Frequently asked questions

### Is iPSマスター free?

iPSマスター is free to download, with no in-app purchases.

### Is SOINSU math puzzle free?

SOINSU math puzzle is free to download, with in-app purchases available.

### Do iPSマスター or SOINSU math puzzle have ads?

SOINSU math puzzle shows ads; iPSマスター does not.

### Which is updated more often, iPSマスター or SOINSU math puzzle?

iPSマスター ships an update every 4 months, and SOINSU math puzzle weekly. Most recently, iPSマスター was updated on October 17, 2026 and SOINSU math puzzle on October 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.*