Secret Voice Recorder is a free Android app developed by rancicdevelopment. The app allows you to record audio in high quality with a variety of file formats to choose from.

One of the most useful features of Secret Voice Recorder is the ability to record audio in the background, even when the screen is off or the app is swiped out from recent apps. The app also includes a live audio spectrum analyzer, which is a unique feature that allows you to view the sound waves in real-time.

In addition to recording audio, Secret Voice Recorder also allows you to edit your recordings, rename and delete them, and sort them by date, name, and duration. You can even save your recordings to Android internal file storage and share them via email or other apps. Overall, Secret Voice Recorder is a great option for anyone looking for a high-quality audio recording app on Android.