# ChironMotion IMU vs Explosive Athlete

The clearest difference is in-app purchases: Explosive Athlete at none against ChironMotion IMU's 2. Explosive Athlete also leads on update cadence (every 3 days vs every 2 months) and iOS requirement (16.4 vs 18.0). On price, ads 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. Explosive Athlete asks for nothing beyond the download.

ChironMotion IMU ships an update every 2 months, Explosive Athlete every 3 days. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | ChironMotion IMU | Explosive Athlete |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 21 MB | 46 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yi-Fu Chen](https://appshunter.io/developer/1873701789) | [YAVOR STEFANOV BELAKOV](https://appshunter.io/developer/6795137931) |

## 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 |


### Explosive Athlete

[App page](https://appshunter.io/ios/app/explosive-athlete/id6795137929)

**In-app purchases:** none


## Frequently asked questions

### Is ChironMotion IMU free?

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

### Is Explosive Athlete free?

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

### Do ChironMotion IMU or Explosive Athlete have ads?

Neither ChironMotion IMU nor Explosive Athlete shows ads.

### Which is updated more often, ChironMotion IMU or Explosive Athlete?

ChironMotion IMU ships an update every 2 months, and Explosive Athlete every 3 days. Most recently, ChironMotion IMU was updated on October 16, 2026 and Explosive Athlete on October 14, 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.*