# Zero Gravity App vs Gym Booking

The clearest difference is iOS requirement: Zero Gravity App at 12.1 against Gym Booking's 16. 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.

Zero Gravity App ships an update every 7 months, Gym Booking every 5 months. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Zero Gravity App | Gym Booking |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Size | 9 MB | 24 MB |
| Requires iOS | **12.1** | 16 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kostas Kousinovalis](https://appshunter.io/developer/762128160) | [Gym Booking LP](https://appshunter.io/developer/1722435184) |

## What reviewers say

### Zero Gravity App

[App page](https://appshunter.io/ios/app/zero-gravity-app/id1489242961)

**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 Zero Gravity App free?

Zero Gravity App 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 Zero Gravity App or Gym Booking have ads?

Neither Zero Gravity App nor Gym Booking shows ads.

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

Zero Gravity App ships an update every 7 months, and Gym Booking every 5 months. Most recently, Zero Gravity App was updated on October 11, 2026 and Gym Booking 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.*