# UNKNOWN vs おいかわ整骨院

The clearest difference is ads: UNKNOWN at none against おいかわ整骨院's shown. UNKNOWN also leads on iOS requirement (13.0 vs 15.6). おいかわ整骨院's advantage is update cadence (every 16 months vs every 34 months). On price, 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.

UNKNOWN ships an update every 34 months, おいかわ整骨院 every 16 months. The most recent releases landed on October 1, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | UNKNOWN | おいかわ整骨院 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 34 months | **Every 16 months** |
| Size | 3 MB | 80 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [shingo kamei](https://appshunter.io/developer/1256845824) | [Motoki Oikawa](https://appshunter.io/developer/1597859401) |

## What reviewers say

### UNKNOWN

[App page](https://appshunter.io/ios/app/unknown/id1591406924)

**In-app purchases:** none


### おいかわ整骨院

[App page](https://appshunter.io/ios/app/id1597859399)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is UNKNOWN free?

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

### Is おいかわ整骨院 free?

おいかわ整骨院 is free to download, with no in-app purchases.

### Do UNKNOWN or おいかわ整骨院 have ads?

おいかわ整骨院 shows ads; UNKNOWN does not.

### Which is updated more often, UNKNOWN or おいかわ整骨院?

UNKNOWN ships an update every 34 months, and おいかわ整骨院 every 16 months. Most recently, UNKNOWN was updated on October 1, 2026 and おいかわ整骨院 on October 27, 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.*