# FitZone 24/7 vs UNDRGRND Training

The clearest difference is device support: FitZone 24/7 at 4 against UNDRGRND Training's 2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

FitZone 24/7 ships an update every 6 weeks, UNDRGRND Training every 2 months. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | FitZone 24/7 | UNDRGRND Training |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Size | 164 MB | 56 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Burn Functional Fitness](https://appshunter.io/developer/1493270576) | [Momence, Inc.](https://appshunter.io/developer/1577856011) |

## What reviewers say

### FitZone 24/7

[App page](https://appshunter.io/ios/app/fitzone-247/id1565444185)

**Features:** Apple Wallet, Apple Watch app, Vision Pro support

**In-app purchases:** none


### UNDRGRND Training

[App page](https://appshunter.io/ios/app/undrgrnd-training/id6450916859)

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

**In-app purchases:** none


## Frequently asked questions

### Is FitZone 24/7 free?

FitZone 24/7 is free to download, with no in-app purchases.

### Is UNDRGRND Training free?

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

### Do FitZone 24/7 or UNDRGRND Training have ads?

Neither FitZone 24/7 nor UNDRGRND Training shows ads.

### Which is updated more often, FitZone 24/7 or UNDRGRND Training?

FitZone 24/7 ships an update every 6 weeks, and UNDRGRND Training every 2 months. Most recently, FitZone 24/7 was updated on October 24, 2026 and UNDRGRND Training on October 25, 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.*