Hello rbart,
Firstly, thank you so much for all the work you've done on the application: it's simply incredible to have achieved something so accomplished on your own! At the same time, I think that's why the user experience is so consistent.
However, I'd like to take the liberty of re-launching the integration of Stryd. In my opinion, it's the only thing missing when compared with other applications such as Workoutdoor, Ismoothrun and GPS sports watches... it's a real game changer for obtaining reliable paces, so you don't have to go to the stadium to measure your 400m times. This compatibility would undoubtedly lead to many people buying the PRO version.
I don't use the application because of this point, but I have bought the pro version to support development
Many thanks, long live France and ... your health above all.