iTunes offers downloads of Shhh... Sleep in Seconds for iPhone and iPad for free. (Google Play also offers the Android version for free.) That's a $4 drop, the lowest price we could find, and the first time it's been available for free since February. It purports to help you get to sleep faster.
Amazon offers the CamScanner License for Android for $1.99. (Google Play has it for the same. Once purchased, an activation code will be sent which allows you to upgrade from the free app to the full version. ) That's $3 off and the best price we could find. This app scans and saves documents.