Clock JB+ is an improved version of the official Alarm Clock app included on Jelly Bean (Android 4. 3). BestAppEver Awards 2013 - Second Place: Best Android Personalization App. Features. Digital & analog clock. Alarm. Customizable digital/analog widget. Countdown timer. Stopwatch. Night mode. Lock-screen widgets (only Android 4. 2+). Compatible with Android 2. 2. Ad-free.