Recently I’ve been doing heart rate based workouts. I went looking for an app to display my current Watch heart rate on my iPhone but couldn’t find one, so of course I had to make one (not as a product, just for me).

The design for this was really interesting, I wanted to visually reference the watchOS 9 heart tracking but in a way which worked at iPhone size. I recorded my design process as one of my ‘design speedrun' videos:

Video: https://www.youtube.com/watch?v=k7XntSWmVIA
Article: https://www.david-smith.org/blog/2023/04/24/design-notes-35/