A free program for Android, by HD Camera.

Voice Recorder: Audio Recorder is an application that allows you to record your voice. This digital recorder does not have any limits when you record so you are going to enjoy using this app when you download. Voice Recorder: Audio Recorder has different features that includes recording in background, user-friendly player, you can also share, rename, and delete your recordings with ease, every recordings are separated and labeled with date name and duration that allows you to keep track on your recordings without any difficulties. Moreover, the save recordings will directly show on your media library. It also has an audio source for microphones. Now, you don’t have to buy physical recording device because this application has already got you covered.