# Calculus Gacha！ vs 化学マスター

The clearest difference is iOS requirement: Calculus Gacha！ at 15.0 against 化学マスター's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Calculus Gacha！ sells 2 one-off in-app purchases and 化学マスター sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Calculus Gacha！ | 化学マスター |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Size | 84 MB | 37 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shunsuke Nakamura](https://appshunter.io/developer/1828229182) | [ryo otsuka](https://appshunter.io/developer/6788628020) |

## What reviewers say

### Calculus Gacha！

[App page](https://appshunter.io/ios/app/calculus-gacha/id6753078774)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Tutor Pass | $2.99 | one-time |
| AI Tutor Plus(500) | $2.99 | one-time |


### 化学マスター

[App page](https://appshunter.io/ios/app/id6788745347)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 化学マスター Pro | $2.99 | one-time |


## Frequently asked questions

### Is Calculus Gacha！ free?

Calculus Gacha！ is free to download, with in-app purchases available.

### Is 化学マスター free?

化学マスター is free to download, with in-app purchases available.

### Do Calculus Gacha！ or 化学マスター have ads?

Neither Calculus Gacha！ nor 化学マスター shows ads.

### Which is updated more often, Calculus Gacha！ or 化学マスター?

Calculus Gacha！ ships an update every 5 days, and 化学マスター every 5 days. Most recently, Calculus Gacha！ was updated on November 8, 2026 and 化学マスター on November 5, 2026.

---

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