RunBeat exercise app

RunBeat is a simple exercise app that allows the user to set a pace program for running, chasing a simple audio beat which changes pace throughout the run time. Essentially RunBeats is a simple beat generator, like a simple drum machine or metronome but the key point is that the beats vary - increasing from a Start pace to a Peak pace then decreasing down again. The Start and Peak paces can be chosen by the user. It also needs to be vary the beats per minute seamlessly within the program. There cannot be any gaps or break in pace. I can provide most of the artwork, but I will require some simple small additions.