Create custom swim practices. Program them into your Swimnerd Pace Clock from your phone or tablet. “Programming sets with the app allows me to concentrate on each interval without having to do any math while hypoxic. My swim workouts actually feel easier due to the precision pacing and programmability this clock allows.” – Chris H. “It has changed the way we do workouts for the better. I can run any interval I want. I have my workouts planned and just hit start.” – Arnoldo P. “The fact that