# Treadmill Assistant vs chrtz

The clearest difference is in-app purchases: chrtz at none against Treadmill Assistant's 2. chrtz also leads on update cadence (weekly vs every 3 weeks). Treadmill Assistant's advantage is device support (4 vs 2). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Treadmill Assistant sells 2 in-app purchases, starting at $2.49 per month. chrtz asks for nothing beyond the download.

Treadmill Assistant ships an update every 3 weeks, chrtz weekly. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Treadmill Assistant | chrtz |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 40 MB | 59 MB |
| Requires iOS | **15.0** | 16.2 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Kolto Tech Piotr Koszur](https://appshunter.io/developer/1849003631) | [Sungsu Choi](https://appshunter.io/developer/1718370500) |

## What reviewers say

### Treadmill Assistant

[App page](https://appshunter.io/ios/app/treadmill-assistant/id6754576110)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.49 | per month |
| Premium Yearly | $14.99 | per year |


### chrtz

[App page](https://appshunter.io/ios/app/chrtz/id6757950661)

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

**In-app purchases:** none


## Frequently asked questions

### Is Treadmill Assistant free?

Treadmill Assistant is free to download, with in-app purchases available.

### Is chrtz free?

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

### Do Treadmill Assistant or chrtz have ads?

Neither Treadmill Assistant nor chrtz shows ads.

### Which is updated more often, Treadmill Assistant or chrtz?

Treadmill Assistant ships an update every 3 weeks, and chrtz weekly. Most recently, Treadmill Assistant was updated on October 15, 2026 and chrtz on September 30, 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.*