The tool has been downloaded and installed by over 100K users and the most recent update was released on Mar 1, 2019. Take into account the important detail: advertisements are a part of this application and it offers in-app purchases. Take the opportunity to get the installation package of Rockrelay Synth FM 3.8 free of charge and take a look at users' reviews on Droid Informer. The app is compatible with Android 5.0 and above.
Users leave reviews pointing out that you can find such advantages of Rockrelay Synth FM as a great UI and full functionality.