RST 599TK vs SatNOGS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RST 599TK
This application simulates Morse code communication for amateur radio operators. It supports various QSO styles, Morse code input via a touch keyer, and includes a CW decoder. Features allow for speed control, status display, and shortcut keys for common phrases.
- CW QSO simulation
- Electric Touch Keyer input
- Contest style QSO support
- CW Speed Control
- Min-in CW Decoder
- Shortcut keys for CQ and TU
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This app is a real CW QSO simulator for Amateur Radio. "599BK & AADX Contest type QSO" is supported. Input of Morse Codes are by using Electric Touch Keyer. Changing of TX/RX is by SEND button. Supported Min-in CW Decoder too. 【Characteristic】 1. "599BK" and "Contest" style support. 2.Support the CW Speed Control, Reverse of Dot/Dash pad. 3.Status display showing TX / RX operation. 4.Support the space insertion operation both automatic and manual. 5.Support the Min-in CW Decoder function. 6.Support the shortcut-key of CQ and TU. CQ Button function can be set by setting menu. 7.Support the repeat-call function. It works only when the TU button is pressed at the end of the QSO. 8.Support input function by key button 【How to use】 1.The case of CQ Calling Press SEND button Input "CQ CQ DX DE (YOUR CALLSIGN) PSE K" by Touch Keyer. Press SEND button again 2.The case of CQ Answering Press SEND button Input "QRZ DX" by Touch Keyer or Straight Key. Press SEND button again --- Examples of QSO --- [CQ Calling] "CQ CQ DX DE xxnxx xxnxx PSE K" >>> xxnxx DE **n** K "**n** DE xxnxx UR RST 559 BK" >>> R MY RPT 559 UR RST 599 BK "QSL TU" >>> R 73 TU "E E" >>> E E [CQ Ansewing] "QRZ DX" >>> "CQ CQ DE **n** **n** PSE K" "**n** DE xxnxx K" >>> "xxnxx DE **n** UR RST 579 BK" "R **n** DE xxnxx UR RST 599 TU" >>> "R TU" "E E" >>> E E --- DETEC WORDS --- [CQ Calling] CQ CQ DX CQ NA CQ JA [CQ Ansewing] QRZ QRZ DX QRZ NA QRZ JA [BOTH] DE K BK UR RST 73 TU E E etc... 【Example usage video】 - Touch Keyer - https://www.youtube.com/watch?v=CuSEaJtD3KQ - Microphone IN Mode - https://www.youtube.com/watch?v=goN9hVDEGnM
SatNOGS
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.
- Global ground station network access
- Remote ground station operation
- Satellite communication
- Public observation data access
- Ground station building resources
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SatNOGS Network is a global management interface to facilitate multiple ground station operations remotely. An observer is able to take advantage of the full network of SatNOGS ground stations around the world. The network is open to anyone. Any observer is able to utilize all available Ground Stations and communicate with Satellites. All observations results are public and all data are distributed freely under the Creative Commons Atribution-Share Alike license. Whether you own satellite ground station equipment or you want to build one you can head to SatNOGS Project site to get up to date documentation and info on how to build a SatNOGS ground station. App functionality is currently limited by SatNOGS API and will be significantly improved in next major release.
Screenshots
Verdict
The clearest difference is rating: SatNOGS at 5.0 against RST 599TK's 4.1. SatNOGS also leads on ads (none vs shown) and monetization model (free vs ad-supported). RST 599TK's advantage is update cadence (every 6 weeks vs every 5 months). On price, ratings volume, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 4.1. Both are backed by a comparable volume of ratings — 9 and 4 respectively.
RST 599TK ships an update every 6 weeks, SatNOGS every 5 months. The most recent releases landed on August 22, 2026 and June 3, 2026 respectively.
| Parameter | RST 599TK | SatNOGS |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (9 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 9 — better | 4 |
| Update frequency | Every 6 weeks — better | Every 5 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 36 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | koji kamogawa | Victor Belov |
Customer experience
RST 599TK
SatNOGS
In-app purchases
RST 599TK
No in-app purchases
SatNOGS
No in-app purchases









