# RT Fit vs ZERO Training Center

The clearest difference is update cadence: ZERO Training Center at every 3 weeks against RT Fit's every 15 months. ZERO Training Center also leads on iOS requirement (13.0 vs 15.0). 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.

RT Fit ships an update every 15 months, ZERO Training Center every 3 weeks. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | RT Fit | ZERO Training Center |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/zero-training-center/id6746328015/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 67 MB | 31 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ashbourne](https://appshunter.io/developer/1130933933) | [TeamUp Sports](https://appshunter.io/developer/1449504626) |

## What reviewers say

### RT Fit

[App page](https://appshunter.io/ios/app/rt-fit/id6474896511)

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

**In-app purchases:** none


### ZERO Training Center

[App page](https://appshunter.io/ios/app/zero-training-center/id6746328015)

This app helps you manage your health and fitness journey. Book classes, track workout progress, monitor body measurements, and connect with club staff. It integrates with Apple Health to import data from wearables and track daily activity.

**Highlights:** Book classes online, Track workout progress, Monitor body measurements, Contact club staff, Apple Health integration, Import wearable data

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RT Fit free?

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

### Is ZERO Training Center free?

ZERO Training Center is free to download, with no in-app purchases.

### Do RT Fit or ZERO Training Center have ads?

Neither RT Fit nor ZERO Training Center shows ads.

### Which is updated more often, RT Fit or ZERO Training Center?

RT Fit ships an update every 15 months, and ZERO Training Center every 3 weeks. Most recently, RT Fit was updated on November 8, 2026 and ZERO Training Center on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*