# ChironMotion IMU vs ZYS Training

The clearest difference is update cadence: ZYS Training at every 5 days against ChironMotion IMU's every 2 months. ZYS Training also leads on iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ChironMotion IMU sells 2 in-app purchases, starting at $3.99 per month and ZYS Training sells 10 in-app purchases, starting at $39.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ChironMotion IMU ships an update every 2 months, ZYS Training every 5 days. The most recent releases landed on October 25, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | ChironMotion IMU | ZYS Training |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Size | 21 MB | 38 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yi-Fu Chen](https://appshunter.io/developer/1873701789) | [ZYS Co., Ltd.](https://appshunter.io/developer/6780589066) |

## What reviewers say

### ChironMotion IMU

[App page](https://appshunter.io/ios/app/chironmotion-imu/id6758951844)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly Plan | $3.99 | per month |
| Pro Yearly Plan | $39.99 | per year |


### ZYS Training

[App page](https://appshunter.io/ios/app/zys-training/id6780589064)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一對一課表・每週 2 天 | $39.99 | per 7 days |
| 一對一課表・每週 3 天 | $49.99 | per 7 days |
| 一對一課表・每週 4 天 | $49.99 | per 7 days |
| Hyrox Advance 無回饋 月繳 | $49.99 | per month |
| 一對一課表・每週 5-6 天 | $59.99 | per 7 days |
| Hyrox Advance 月繳 | $99.99 | per month |
| 一對一課表・每週 3 天 | $149.99 | per month |
| 一對一課表・每週 5-6 天 | $199.99 | per month |
| Hyrox Advance 無回饋 半年繳 | $299.99 | per 6 months |
| Hyrox Advance 回饋 半年繳 | $599.99 | per 6 months |


## Frequently asked questions

### Is ChironMotion IMU free?

ChironMotion IMU is free to download, with in-app purchases available.

### Is ZYS Training free?

ZYS Training is free to download, with in-app purchases available.

### Do ChironMotion IMU or ZYS Training have ads?

Neither ChironMotion IMU nor ZYS Training shows ads.

### Which is updated more often, ChironMotion IMU or ZYS Training?

ChironMotion IMU ships an update every 2 months, and ZYS Training every 5 days. Most recently, ChironMotion IMU was updated on October 25, 2026 and ZYS Training on November 5, 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.*