# STEPX vs 進化論Evolution Fitness

The clearest difference is update cadence: 進化論Evolution Fitness at every 2 months against STEPX's every 10 months. 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.

STEPX ships an update every 10 months, 進化論Evolution Fitness every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | STEPX | 進化論Evolution Fitness |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Size | 52 MB | 80 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Eternal W Technology Co., Ltd.](https://appshunter.io/developer/1485685478) | [Po-Chuan Hsueh](https://appshunter.io/developer/1701937854) |

## What reviewers say

### STEPX

[App page](https://appshunter.io/ios/app/stepx/id1611693670)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### 進化論Evolution Fitness

[App page](https://appshunter.io/ios/app/evolution-fitness/id1621430063)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is STEPX free?

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

### Is 進化論Evolution Fitness free?

進化論Evolution Fitness is free to download, with no in-app purchases.

### Do STEPX or 進化論Evolution Fitness have ads?

Neither STEPX nor 進化論Evolution Fitness shows ads.

### Which is updated more often, STEPX or 進化論Evolution Fitness?

STEPX ships an update every 10 months, and 進化論Evolution Fitness every 2 months. Most recently, STEPX was updated on November 3, 2026 and 進化論Evolution Fitness on November 3, 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.*