# RotaStone vs quantum gates

The clearest difference is in-app purchases: RotaStone at none against quantum gates's 2. RotaStone also leads on iOS requirement (12.0 vs 15.0). quantum gates's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. quantum gates sells 2 one-off in-app purchases. RotaStone asks for nothing beyond the download.

RotaStone ships an update every 2 months, quantum gates every 6 weeks. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | RotaStone | quantum gates |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Size | 60 MB | 1 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [radiuthree Co., Ltd](https://appshunter.io/developer/1158448737) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### RotaStone

[App page](https://appshunter.io/ios/app/rotastone/id1619250280)

**Features:** macOS Compatibility

**In-app purchases:** none


### quantum gates

[App page](https://appshunter.io/ios/app/quantum-gates/id6451081177)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| original | Free | one-time |
| premium | $0.99 | one-time |


## Frequently asked questions

### Is RotaStone free?

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

### Is quantum gates free?

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

### Do RotaStone or quantum gates have ads?

RotaStone shows ads; quantum gates does not.

### Which is updated more often, RotaStone or quantum gates?

RotaStone ships an update every 2 months, and quantum gates every 6 weeks. Most recently, RotaStone was updated on September 9, 2026 and quantum gates on September 15, 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.*