Stay Awake checks in at the interval you choose. Confirm with a tap, a shake, a flip or the volume button. Miss a check and your phone vibrates after 10 seconds, then a real alarm sounds after 20. For night shifts, late study and long work sessions. No account, works offline. Free with a small banner; Pro removes it.
Your phone screen isn't always just yours. Removication hides notifications from the apps you choose – from the screen, the shade and the lock screen. One tap on a widget or in Quick Settings, and they're gone; even the ones already showing. Nothing is lost: everything waits in the Notification Catcher. Hide a whole app or only certain kinds, set time windows, or censor to a neutral "1 new notification". No account, no cloud. Calls and alarms always get through.