Rewind: Reverse Voice Recorder captures everything your phone hears - Android Community
Android Giveaway of the Day - Rewind: Reverse Voice Recorder
Reverse Voice for Fun - Apps on Google Play
Any apps that record audio continuously in the background and allow you to " record back in time"? : r/androidapps
Voice Activated Recorder Fast Forward Reverse Magnetic Adsorption HD Small Digital Voice Recorder MP3 192KBPS for Interview (8GB) : Amazon.ca: Office Products