An alarm mode is also available for the occasional overnight sleep. MAIN FEATURES - Choose nap duration up to one hour and tap start - Alarm mode by setting time in the next 24 hours - Choose one or more wake-up title out of your iPhone music library - Adjust progressive wake-up volume characteristics - Default soft alarm sound available - Security notifications are triggered if you accidentally leave the App - Sleeping screen luminosity adjustment - Energy saving mode by leaving iPhone face down on bedside table - A cute manga help character