# RST 599 vs Apiara

The clearest difference is ads: Apiara at none against RST 599's shown. Apiara also leads on update cadence (every 5 days vs every 2 months). RST 599's advantage is iOS requirement (13.0 vs 17.0). On price, 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.

RST 599 ships an update every 2 months, Apiara every 5 days. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | RST 599 | Apiara |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (8 ratings)](https://appshunter.io/ios/app/rst-599/id1488919851/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Ad-supported | — |
| Size | 41 MB | 64 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [Garst Peterson](https://appshunter.io/developer/1896227590) |

## What reviewers say

### RST 599

[App page](https://appshunter.io/ios/app/rst-599/id1488919851)

This application simulates amateur radio CW QSOs with realistic call signs, signal levels, and CW speeds. It supports various QSO styles, including contest and rubber stamp types, with adjustable settings for a personalized training experience.

**Highlights:** Multiple QSO styles supported, Realistic signal meter, Spectrum scope display, Adjustable CW speed and call sign, Pile-up simulation, QRN presence toggle

**Features:** macOS Compatibility

**In-app purchases:** none


### Apiara

[App page](https://appshunter.io/ios/app/apiara/id6790204797)

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

**In-app purchases:** none


## Frequently asked questions

### Is RST 599 free?

RST 599 is free to download, with no in-app purchases.

### Is Apiara free?

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

### Do RST 599 or Apiara have ads?

RST 599 shows ads; Apiara does not.

### Which is updated more often, RST 599 or Apiara?

RST 599 ships an update every 2 months, and Apiara every 5 days. Most recently, RST 599 was updated on October 6, 2026 and Apiara on October 5, 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.*