# THREEA GYM vs 4cm（ヨンセンチ）

THREEA GYM and 4cm（ヨンセンチ） are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 38 months. The most recent releases landed on October 20, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | THREEA GYM | 4cm（ヨンセンチ） |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | Every 38 months |
| Size | 3 MB | 3 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Naoya Takahashi](https://appshunter.io/developer/1301211980) | [shingo kamei](https://appshunter.io/developer/1256845824) |

## What reviewers say

### THREEA GYM

[App page](https://appshunter.io/ios/app/threea-gym/id1633943730)

**In-app purchases:** none


### 4cm（ヨンセンチ）

[App page](https://appshunter.io/ios/app/4cm/id6444125643)

**In-app purchases:** none


## Frequently asked questions

### Is THREEA GYM free?

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

### Is 4cm（ヨンセンチ） free?

4cm（ヨンセンチ） is free to download, with no in-app purchases.

### Do THREEA GYM or 4cm（ヨンセンチ） have ads?

Neither THREEA GYM nor 4cm（ヨンセンチ） shows ads.

### Which is updated more often, THREEA GYM or 4cm（ヨンセンチ）?

THREEA GYM ships an update every 38 months, and 4cm（ヨンセンチ） every 38 months. Most recently, THREEA GYM was updated on October 20, 2026 and 4cm（ヨンセンチ） 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.*