# RotaStone vs Juhojin

The clearest difference is ads: Juhojin at none against RotaStone's shown. Juhojin also leads on update cadence (every 2 days vs every 2 months). RotaStone's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 26.0). On price 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.

RotaStone ships an update every 2 months, Juhojin every 2 days. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | RotaStone | Juhojin |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 60 MB | 21 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [radiuthree Co., Ltd](https://appshunter.io/developer/1158448737) | [ryogo shimizu](https://appshunter.io/developer/1782520149) |

## What reviewers say

### RotaStone

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Juhojin

[App page](https://appshunter.io/ios/app/juhojin/id6757918794)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RotaStone free?

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

### Is Juhojin free?

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

### Do RotaStone or Juhojin have ads?

RotaStone shows ads; Juhojin does not.

### Which is updated more often, RotaStone or Juhojin?

RotaStone ships an update every 2 months, and Juhojin every 2 days. Most recently, RotaStone was updated on November 3, 2026 and Juhojin 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.*