PlayButton is a simple app that boils audio record and playback to its essence. One record button, one play button, and one sound at a time. If you need a quick way to record a sound and play it back, it doesn't get simpler than this.
Used in therapy for special needs students who have physical problems with pressing small buttons, this app allows the user to participate with their sound.
For additional control over the interface a "lock" functionality is available from the device's Settings that allows a recorded sound to be locked, removing the record buttons until the app is unlocked.