# ケミマスター vs Thoth

The clearest difference is update cadence: Thoth at every 2 days against ケミマスター's every 9 days. Thoth also leads on device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ケミマスター ships an update every 9 days, Thoth every 2 days. The most recent releases landed on September 16, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | ケミマスター | Thoth |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 2 days** |
| Size | 200 MB | 61 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shuntarou Kojima](https://appshunter.io/developer/1805023945) | [THOTH Inc.](https://appshunter.io/developer/6783651004) |

## What reviewers say

### ケミマスター

[App page](https://appshunter.io/ios/app/id6746825286)

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

**In-app purchases:** none


### Thoth

[App page](https://appshunter.io/ios/app/thoth/id6783651002)

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

**In-app purchases:** none


## Frequently asked questions

### Is ケミマスター free?

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

### Is Thoth free?

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

### Do ケミマスター or Thoth have ads?

Neither ケミマスター nor Thoth shows ads.

### Which is updated more often, ケミマスター or Thoth?

ケミマスター ships an update every 9 days, and Thoth every 2 days. Most recently, ケミマスター was updated on September 16, 2026 and Thoth on September 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*