Hidden Voice Recorder

Hidden Voice Recorder is an app for converting your Android into a voice recorder. To start and stop recording, all you have to do is tap the button on your Android smartphone. You can also start recording by tapping on the button in the app or using a customized widget.

In the settings, you can choose the folder where you want to store all these recordings. You can also set up a maximum duration for your recordings or record your phone calls automatically. You can even sync your recordings with Dropbox so they're automatically uploaded.

Hidden Voice Recorder is a great app for recording audio, thanks to which you can record any conversation secretly. And all you have to do is tap on the button three times, and a vibration will confirm when the recording starts and stops.