Membrain is a â€œsmartâ€ audio recorder application which only saves what you want it to hear. It offers two main advantages to the competition: the addition of a "set and forget" mode, and the ability to sync your files to your Dropbox account.
Membrain works by taking calibrating to the ambient audio level and only recording when it detects noise above that threshold. Itâ€™s perfect for times when you donâ€™t have the ability to repeatedly press the stop and record button. For example, just set it before you go to bed, place your phone next to your bed, and listen to anything you said in your sleep the next morning!
Even better: if you ever need to move these recordings from off your phone, Dropbox integration is provided for uploading your recordings.
Membrain Recorder is free and can be found on the Marketplace here.