# RST Scope Pro vs Air

The clearest difference is price: Air at Free against RST Scope Pro's $1.99. Air also leads on iOS requirement (13.0 vs 15.6). RST Scope Pro's advantage is update cadence (every 6 days vs every 5 months). On ads, in-app purchases and device support there is nothing between them.

Air is free to download; RST Scope Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RST Scope Pro ships an update every 6 days, Air every 5 months. Both last shipped on October 27, 2026.

## The numbers

| Metric | RST Scope Pro | Air |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 5 months |
| Size | 1 MB | 8 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [ALINCO](https://appshunter.io/developer/1342519345) |

## What reviewers say

### RST Scope Pro

[App page](https://appshunter.io/ios/app/rst-scope-pro/id1550939327)

**In-app purchases:** none


### Air

[App page](https://appshunter.io/ios/app/air-incom-pro/id1570076119)

**In-app purchases:** none


## Frequently asked questions

### Is RST Scope Pro free?

RST Scope Pro costs $1.99, with no in-app purchases.

### Is Air free?

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

### Do RST Scope Pro or Air have ads?

Neither RST Scope Pro nor Air shows ads.

### Which is updated more often, RST Scope Pro or Air?

RST Scope Pro ships an update every 6 days, and Air every 5 months. Most recently, RST Scope Pro was updated on October 27, 2026 and Air on October 27, 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.*