I have nothing but praise for the application and the support provided. Everything I have asked for and more has been added or corrected. My current workout program (RMAX Tacfit) cycles through various timing scenarios and this timer fits the bill perfectly. I added an external speaker to allow a group to workout together. So my next request is to be able to select various warning points (midpoint, 10 sec remaining, etc) within an interval. Thanks for a great product. May be the best $2 I ever spent.