# THREE vs コロナ均整院

The clearest difference is update cadence: THREE at every 2 months against コロナ均整院's every 24 months. コロナ均整院's advantage is iOS requirement (9.0 vs 13.0). 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.

THREE ships an update every 2 months, コロナ均整院 every 24 months. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | THREE | コロナ均整院 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 24 months |
| Size | 32 MB | 17 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACRO INC.](https://appshunter.io/developer/1479535098) | [MITAKE RYUUJI](https://appshunter.io/developer/1486735501) |

## What reviewers say

### THREE

[App page](https://appshunter.io/ios/app/three/id1479535099)

**In-app purchases:** none


### コロナ均整院

[App page](https://appshunter.io/ios/app/id1486735502)

**In-app purchases:** none


## Frequently asked questions

### Is THREE free?

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

### Is コロナ均整院 free?

コロナ均整院 is free to download, with no in-app purchases.

### Do THREE or コロナ均整院 have ads?

Neither THREE nor コロナ均整院 shows ads.

### Which is updated more often, THREE or コロナ均整院?

THREE ships an update every 2 months, and コロナ均整院 every 24 months. Most recently, THREE was updated on October 2, 2026 and コロナ均整院 on October 1, 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.*