RST Scope
RST Scope Summary
RST Scope is a ad-supported iOS app in Tools by koji kamogawa. Released in Jan 2021 (5 years ago). It has 1.00 ratings with a 5.00★ (excellent) average. Based on AppGoblin estimates, it reaches roughly 4.00 monthly active users and generates around $<10K monthly revenue (0% IAP / 100% ads). Store metadata: updated Dec 27, 2025.
Store info: Last updated on App Store on Dec 27, 2025 .
5★
Ratings: 1.00
Screenshots
App Description
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