Lightning Bug is described as 'Visual sound machine and alarm clock. The application features a night time clock, sleep timer and alarm. You can choose from many scenes with multiple sound effects. Includes a calming rain and lightning storm designed to help you sleep better' and is an app in the sport & health category. There are more than 25 alternatives to Lightning Bug for a variety of platforms, including Android, iPhone, iPad, Android Tablet and Mac apps. The best Lightning Bug alternative is Alarm Clock Xtreme, which is free. Other great apps like Lightning Bug are Deep Sleep Sounds, Endel, Tide (by Moreless) and Ambiance.