Perfect for stationary biking with heart rate sensor

I have a BlueHR heart rate monitor which I am extremely happy with, and this simple no-frills app is perfect for tracking exercise on my stationary bike. No extra fluff like weight and food logging, and great integration with HealthKit.
I wish more health apps would take the approach of doing one thing extremely well and integrating with health kit.
Too many try to be a one-stop-shop and end up doing loads of things poorly.

My one request would be built-in support for simple interval training. Even just a simple configurable timer for that purpose would be great.

MrWeir about Wahoo, v5.7.5