SDR Touch allows connecting hardware SDR receivers to Android via a USB cable. Turn any mobile phone or tablet with USB host/OTG support into a portable software defined radio scanner and a spectrum analyser. Driver support exist for RTL-SDR, NeSDR, SDRplay and HackRF.
Get the latest .apk setup package of SDR Touch 2.65 free of charge and read users' reviews on Droid Informer. You will need 1 MB of free disk space to install the app that is designed for Android 4.0 and above. This application was checked for viruses and it was found 100% safe. Martin Marinov is the developer of the tool which can be found in the Music & Audio category.