kSDR
kSDR Summary
kSDR is a with in-app purchases Android app in Tools by KSLABS. Released in Aug 2025 (8 months ago). It has about 4.4K+ installs Based on AppGoblin estimates, it reaches roughly 599 monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated Jan 27, 2026.
Recent activity: 219 installs this week (867 over 4 weeks) showing exceptional growth View trends →
Store info: Last updated on Google Play on Jan 27, 2026 .
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App Description
Listen and transmit radio with popular USB SDRs (RTL-SDR, HackRF, etc.)
kSDR — an app for working with popular SDR receivers.
It enables reception and exploration of radio signals for amateur and educational purposes.
Currently supports the following popular USB SDR devices: RTL-SDR, HackRF, SDRplay (RSP), and others. Works directly via USB OTG.
Features:
- Receive radio signals with spectrum and waterfall display
- Supports AM and SSB (LSB/USB) demodulation
- Frequency memory presets
- Adjustable gain and bandwidth settings
- Low-latency audio output (<200 ms)
- Transmit radio signals using your device’s microphone (HackRF only).
With HackRF One, you can not only listen but also transmit — simply choose a frequency and modulation, and start broadcasting directly from your phone!
- And more.
Requirements:
USB OTG support on your Android device
A compatible SDR device (e.g., RTL2832U, HackRF One, RSP1/2, or msi2500-compatible device)
⚠️ Note: Core features of the app require a connected SDR device to function properly.
A 5-day free trial is provided so you can evaluate the app before purchasing the full version.