The Colonoscopy Helper is the first smartphone app that provides a complete, comprehensive step-by-step multi-media instruction for colonoscopy preparation. There are 13 reminders, spread over 10 days including reminders before and after the procedure. It provides guidance with illustration, text, and audio directions to ensure that the bowel prep is done just right. It also reminds important medication(s) that may need to be adjusted, held, and resumed at appropriate time and interval. Finally, it alerts important symptoms following colonoscopy that may require a prompt medical attention. Colonoscopy Helper is really a very helpful and essential companion to having colonoscopy examination.