# SDR Touch - Live radio via USB

> The most popular Software Defined Radio app for Android

Canonical page: [https://chrome-stats.com/d/marto.androsdr2](https://chrome-stats.com/d/marto.androsdr2)

## Overview

- **ID:** `marto.androsdr2`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Signalware Ltd
- **Category:** MUSIC\_AND\_AUDIO
- **Downloads:** 1,908,112
- **Rating:** 2.94 / 5 (5,107 ratings)
- **Version:** 2.75
- **Last updated:** 2026-08-17
- **First published:** 2013-01-29
- **Publisher country:** GB
- **Size:** 12 MB
- **Data as of:** 2026-09-11
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=marto.androsdr2)
- **Website:** [http://sdrtouch.com/](http://sdrtouch.com/)
- **Privacy policy:** [http://sdrtouch.com/privacy\_policy.html](http://sdrtouch.com/privacy_policy.html)

## Description

**SDR Touch** transforms your Android device into a powerful portable software defined radio scanner and spectrum analyzer through USB connection. Compatible with popular hardware like RTL-SDR, SDRplay, and HackRF, it supports a broad radio frequency range from 20 MHz to 2.2 GHz. 

Enjoy live streaming and recording of over-the-air FM stereo radio with RDS data, weather updates, emergency broadcasts, HAM radio communications, and more. The app demodulates various signals including FM, AM, USB, and LSB. Its built-in RDS monitor reveals hidden digital data such as program types and alternative frequencies.

Operating fully offline, SDR Touch requires no internet connection, making it ideal for field use. Simply connect your compatible USB SDR hardware with an OTG cable to get started. Please note this app is experimental and users should comply with local laws regarding radio reception.

## Rankings

- #46,324 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.READ_MEDIA_AUDIO`
- `android.permission.USE_LOOPBACK_INTERFACE`
- `android.permission.WRITE_EXTERNAL_STORAGE`
- `com.android.vending.BILLING`
- `marto.androsdr2.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

SDR Touch is praised for value and a solid feature set, including draggable spectrum, adjustable bandwidth, recording, scanning, and flexible hardware support (USB dongles or network sources). However, reviews consistently flag paywalls and short trials, stability issues after purchases, and mixed hardware compatibility. Users report crashes, permission/import/export problems, and devices or drivers not fully supported. UI complaints—clunky controls, accidental filters, and auto-launch on dongle plug—also recur. Overall, it's a capable, affordable SDR app, but reliability, monetization, and broad compatibility need improvement.

### Pros

- Low cost / good value, especially the paid version.
- Rich feature set: draggable spectrum display, adjustable bandwidth, multiple signal types/modes, audio recording, and signal scanning.
- Flexible hardware support: works with USB SDR dongles and networked sources.
- Portable/useful for outdoors/travel with SDR dongles.

### Cons

- Aggressive monetization: paywalls and very short free trial that limits testing.
- Stability issues after purchase: crashes or lockups and problems importing/exporting due to permissions.
- Hardware compatibility and driver support gaps: not working on certain SDR models or devices; installation/launch issues.
- Usability and UI frustrations: clunky, unintuitive interface; accidental filter changes; auto-launch on dongle plug.

## Similar extensions and apps

- [SDR Radio](https://chrome-stats.com/d/com.sdr_labs.sdrradio) — 36,646 users, 3.22 / 5
- [kSDR](https://chrome-stats.com/d/ru.kslabs.ksdr) — 7,189 users, 4.33 / 5
- [SDR Pro: Radio Signal Analyzer](https://chrome-stats.com/d/com.poweredsciences.lucio) — 162 users
- [SDR Touch Key](https://chrome-stats.com/d/marto.androsdr.key) — 68,753 users, 3.90 / 5
- [SDRangel](https://chrome-stats.com/d/org.sdrangel) — 62,407 users, 4.02 / 5
- [SDR driver](https://chrome-stats.com/d/marto.rtl_tcp_andro) — 1,384,121 users, 3.98 / 5
- [STARWAVES DRM SoftRadio](https://chrome-stats.com/d/com.starwaves.drmsoftradio.drm) — 920 users
- [Spectrum SDR (RTL-SDR)](https://chrome-stats.com/d/me.jajae.spectrumsdr) — 21,359 users, 3.31 / 5
- [FM Radio (RTL-SDR)](https://chrome-stats.com/d/me.jajae.fmradio) — 25,350 users, 3.48 / 5
- [SdrTuner HackRF Rtl Sdr RF Spe](https://chrome-stats.com/d/com.sdrtuner) — 2,688 users, 3.00 / 5
- [MagicSDR](https://chrome-stats.com/d/com.sdr_labs.magicsdr) — 248,506 users, 3.25 / 5
- [Xradio ADS-B Receiver](https://chrome-stats.com/d/com.wilsonae.android.usbserial) — 54,054 users, 3.30 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/marto.androsdr2)