# RotaStone vs ODHIN (オディン)

The clearest difference is update cadence: ODHIN (オディン) at daily against RotaStone's every 2 months. RotaStone's advantage is iOS requirement (12.0 vs 18.2). On price, ads, in-app purchases and device support 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, ODHIN (オディン) daily. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | RotaStone | ODHIN (オディン) |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Daily** |
| Monetization | — | Ad-supported |
| Size | 60 MB | 55 MB |
| Requires iOS | **12.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [radiuthree Co., Ltd](https://appshunter.io/developer/1158448737) | [Taiki Nishimura](https://appshunter.io/developer/1780302048) |

## What reviewers say

### RotaStone

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

**Features:** macOS Compatibility

**In-app purchases:** none


### ODHIN (オディン)

[App page](https://appshunter.io/ios/app/odhin/id6752253978)

A strategic card game where players combine cards by color and number to defeat opponents. Aim to empty your hand first by playing higher values than the current field, while strategically collecting opponent cards. Practice against CPU or compete in national rankings.

**Highlights:** 2-4 player strategic card game, Combine same color/number cards, Play higher values than field, Collect opponent cards, CPU practice and national rankings, Special rainbow cards

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RotaStone free?

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

### Is ODHIN (オディン) free?

ODHIN (オディン) is free to download, with no in-app purchases.

### Do RotaStone or ODHIN (オディン) have ads?

Both RotaStone and ODHIN (オディン) show ads.

### Which is updated more often, RotaStone or ODHIN (オディン)?

RotaStone ships an update every 2 months, and ODHIN (オディン) daily. Most recently, RotaStone was updated on October 11, 2026 and ODHIN (オディン) on October 14, 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.*