# RST SEAL vs SatNOGS

The clearest difference is rating: SatNOGS at 5.0 against RST SEAL's 4.5. SatNOGS also leads on ads (none vs shown) and monetization model (free vs ad-supported). RST SEAL's advantage is update cadence (every 3 weeks vs every 5 months) and iOS requirement (13.0 vs 15.0). On price, ratings volume, 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.

SatNOGS holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

RST SEAL ships an update every 3 weeks, SatNOGS every 5 months. The most recent releases landed on October 21, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | RST SEAL | SatNOGS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/rst-seal/id1535376410/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/satnogs/id1669797826/reviews)** |
| Number of ratings | 2 | **4** |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | Ad-supported | **Free** |
| Size | 9 MB | 48 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [Victor Belov](https://appshunter.io/developer/1356487489) |

## What reviewers say

### RST SEAL

[App page](https://appshunter.io/ios/app/rst-seal/id1535376410)

Practice simulated radio communications for ham radio beginners. Select various QSO elements like callsigns, names, and locations to train your listening and typing skills. Adjust frequency, speed, and volume for a personalized learning experience.

**Highlights:** Simulated QSO communication, Randomized QSO elements (Call, RST, Name, QTH), Adjustable frequency, speed, and volume, Noise (QRN) ON/OFF, Entity selection (W/W, JA, US), Fuzzy keying option

**In-app purchases:** none


### SatNOGS

[App page](https://appshunter.io/ios/app/satnogs/id1669797826)

Access a global network of satellite ground stations to communicate with satellites and observe their data. The platform is open to all, with public observation results freely distributed. Resources are available for building your own ground station.

**Highlights:** Global ground station network access, Remote ground station operation, Satellite communication, Public observation data access, Ground station building resources

**In-app purchases:** none


## Frequently asked questions

### Is RST SEAL free?

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

### Is SatNOGS free?

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

### Which has better reviews, RST SEAL or SatNOGS?

SatNOGS is rated higher. RST SEAL averages 4.5 out of 5 from 2 ratings, while SatNOGS averages 5.0 from 4 ratings.

### Do RST SEAL or SatNOGS have ads?

RST SEAL shows ads; SatNOGS does not.

### Which is updated more often, RST SEAL or SatNOGS?

RST SEAL ships an update every 3 weeks, and SatNOGS every 5 months. Most recently, RST SEAL was updated on October 21, 2026 and SatNOGS on October 16, 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.*