Spectrum Compact Simulator vs RST Scope
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spectrum Compact Simulator
Explore the functionality of a handheld microwave spectrum analyzer through a realistic simulation. This application demonstrates how to perform antenna alignment, troubleshooting, and maintenance with ease and speed.
- Simulates handheld microwave spectrum analyzer
- Demonstrates real microwave radio spectrum data
- Facilitates antenna alignment
- Aids in troubleshooting
- Supports maintenance tasks
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SAF Spectrum Compact Simulator application was created for you to discover and experience the ease of use of the world's first handheld microwave spectrum analyzer. The application demonstrate full set of SAF Spectrum Compact functions by simulating real microwave radio spectrum data. The device makes the antenna alignment, troubleshooting and maintenance as easy and fast as never before!
RST Scope
This utility app provides spectrum scope and waterfall displays for amateur radio operators. It enhances radios lacking these features by analyzing microphone input, allowing for clear distinction of Morse code and detailed audio frequency visualization.
- Spectrum scope and waterfall display
- Morse code distinction via FFT
- Adjustable waterfall speed
- Adjustable audio input level
- Switchable display band (wide/narrow)
- Display pause function
- Recording and playback of input sound
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This is an app for amateur radio operators with a narrow band of audio frequency, spectrum scope & waterfall display. You can get a rich display by microphone inputting the speaker output of a radio that does not have a spectrum scope or waterfall function. The FFT allows you to distinguish between the dot and dash of Morse code. [function] 1. Ability to change the speed of the waterfall 2. Ability to adjust the level of audio input 3. Function to switch the display band between wide and narrow 4. Display pause function (pause / cancel by touching the screen) 5. Function to switch the cross hatch ON / OFF by longTap 6. Frequency resolution is fixed at 40Hz. 7. Function to switch the USB/LSB by Left/Right Swipe 8.Recording/Playback function of Input Sound RST Scope(Free) https://www.youtube.com/watch?v=1s9RvOFp52g
Screenshots
Verdict
The clearest difference is rating: RST Scope at 5.0 against Spectrum Compact Simulator's 1.0. RST Scope also leads on update cadence (every 3 days vs every 2 months). Spectrum Compact Simulator's advantage is ads (none vs shown) and monetization model (free vs ad-supported). 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.
RST Scope holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Spectrum Compact Simulator ships an update every 2 months, RST Scope every 3 days. The most recent releases landed on September 18, 2026 and October 9, 2026 respectively.
| Parameter | Spectrum Compact Simulator | RST Scope |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 7.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 1 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | SAF Tehnika AS | koji kamogawa |
Customer experience
Spectrum Compact Simulator
RST Scope
In-app purchases
Spectrum Compact Simulator
No in-app purchases
RST Scope
No in-app purchases
Questions
Is Spectrum Compact Simulator free?
Is RST Scope free?
Which has better reviews, Spectrum Compact Simulator or RST Scope?
Do Spectrum Compact Simulator or RST Scope have ads?
Which is updated more often, Spectrum Compact Simulator or RST Scope?
Other comparisons
