# Ground Zero vs Gym Booking

The clearest difference is update cadence: Ground Zero at monthly against Gym Booking's every 5 months. Ground Zero also leads on iOS requirement (13 vs 16). 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.

Ground Zero ships an update monthly, Gym Booking every 5 months. The most recent releases landed on September 7, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Ground Zero | Gym Booking |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Size | 14 MB | 24 MB |
| Requires iOS | **13** | 16 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Konstantinos Anagnostakis](https://appshunter.io/developer/545699886) | [Gym Booking LP](https://appshunter.io/developer/1722435184) |

## What reviewers say

### Ground Zero

[App page](https://appshunter.io/ios/app/ground-zero/id6445839166)

**Features:** macOS Compatibility

**In-app purchases:** none


### Gym Booking

[App page](https://appshunter.io/ios/app/gym-booking/id6743946273)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ground Zero free?

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

### Is Gym Booking free?

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

### Do Ground Zero or Gym Booking have ads?

Neither Ground Zero nor Gym Booking shows ads.

### Which is updated more often, Ground Zero or Gym Booking?

Ground Zero ships an update monthly, and Gym Booking every 5 months. Most recently, Ground Zero was updated on September 7, 2026 and Gym Booking on September 10, 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.*