# Chempuz vs Tansaku!

The clearest difference is in-app purchases: Tansaku! at none against Chempuz's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Chempuz sells 2 one-off in-app purchases. Tansaku! asks for nothing beyond the download.

Chempuz ships an update every 5 weeks, Tansaku! monthly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Chempuz | Tansaku! |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 57 MB | 24 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [TomatoAppLab](https://appshunter.io/developer/1676711750) | [Yamaneko Works K. K](https://appshunter.io/developer/1884596854) |

## What reviewers say

### Chempuz

[App page](https://appshunter.io/ios/app/chempuz/id6446211267)

Learn organic chemistry basics by creating molecules and completing puzzles. Trace functional groups to build compounds, score higher with complex structures, and use flashcards to memorize names. Enjoy learning through engaging gameplay.

**Highlights:** Create organic molecules by tracing functional groups, Build approximately 100 types of organic molecules, Score higher with more complex compound creation, Collect discovered compounds, Memorize molecule names with flashcards, Learn organic chemistry through gameplay

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 gem | $0.29 | one-time |
| 10 gems | $1.99 | one-time |


### Tansaku!

[App page](https://appshunter.io/ios/app/tansaku/id6760470202)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chempuz free?

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

### Is Tansaku! free?

Tansaku! is free to download, with no in-app purchases.

### Do Chempuz or Tansaku! have ads?

Both Chempuz and Tansaku! show ads.

### Which is updated more often, Chempuz or Tansaku!?

Chempuz ships an update every 5 weeks, and Tansaku! monthly. Most recently, Chempuz was updated on October 30, 2026 and Tansaku! on October 28, 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.*