# AIR & SPACE vs Diving Rules

The clearest difference is price: Diving Rules at Free against AIR & SPACE's $3.99. AIR & SPACE's advantage is update cadence (every 9 days vs every 6 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Diving Rules is free to download; AIR & SPACE costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AIR & SPACE ships an update every 9 days, Diving Rules every 6 months. The most recent releases landed on September 8, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | AIR & SPACE | Diving Rules |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 6 months |
| Size | 96 MB | 35 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sergey Savitskiy](https://appshunter.io/developer/882760003) | [Benoit Suzanne](https://appshunter.io/developer/1579861869) |

## What reviewers say

### AIR & SPACE

[App page](https://appshunter.io/ios/app/air-and-space/id1332284678)

**Features:** macOS Compatibility

**In-app purchases:** none


### Diving Rules

[App page](https://appshunter.io/ios/app/diving-rules/id1579861867)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AIR & SPACE free?

AIR & SPACE costs $3.99, with no in-app purchases.

### Is Diving Rules free?

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

### Do AIR & SPACE or Diving Rules have ads?

Neither AIR & SPACE nor Diving Rules shows ads.

### Which is updated more often, AIR & SPACE or Diving Rules?

AIR & SPACE ships an update every 9 days, and Diving Rules every 6 months. Most recently, AIR & SPACE was updated on September 8, 2026 and Diving Rules on September 13, 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.*