# RST 599 vs SHEETEST

The clearest difference is update cadence: SHEETEST at every 5 days against RST 599's every 2 months. RST 599's advantage is iOS requirement (13.0 vs 17). 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.

RST 599 ships an update every 2 months, SHEETEST every 5 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | RST 599 | SHEETEST |
| --- | --- | --- |
| 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 | Yes |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Ad-supported | — |
| Size | 41 MB | 4 MB |
| Requires iOS | **13.0** | 17 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [Saya Tachikawa](https://appshunter.io/developer/6794575661) |

## 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


### SHEETEST

[App page](https://appshunter.io/ios/app/sheetest/id6794575659)

**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 SHEETEST free?

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

### Do RST 599 or SHEETEST have ads?

Both RST 599 and SHEETEST show ads.

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

RST 599 ships an update every 2 months, and SHEETEST every 5 days. Most recently, RST 599 was updated on November 7, 2026 and SHEETEST on October 31, 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.*