Hey thanks for the feedback. The secret? I'm not sure? You had issues with the speed or getting the data and updating the view?

What I did is adding a loading indicator and fetching data onChange, so if I change e.g. bow heart rates are calculated it starts to fetch instantly after the change not only on the view with the bars.

And I'm currently just fetching 30 days. I think this will be interesting if I try to extend it.

Onboarding flow, Home screen widget is on my list. Thanks.

The filtering would also be interesting. Haven't though about hat because I usually myself do always the same workouts