I'm hope some of the fitness junkies can help out. I'm looking for a HIIT/timer App that will give me haptic feedback. Been using an app called chronic and it looked great except that AFTER I bought it and started to use it, I discovered that when the ⌚️ goes to sleep chronic does not give any feedback and will only work in the background. This defeated the whole purpose of the app pushed as ⌚️ compatible. (I wish these apps would make that clear to prospective purchasers ). I don't know if there are apps yet which can access ⌚️'s software to give haptic feedback to change rounds up. Any help or advise re apps would be great. Thanks.