Apple watch + wear OS.
It was understandable in the past not to have smartwatch apps since there were a lot of different OS. Now there is a consolidation in the market with Wear OS (Android) and WatchOS (Apple).
I want to use Freeletics for my runs but there is not app on my smartwatch (and the running is not developed enough) so I have to use Strava to get something decent. This is another subscription there, for something that could be integrated with Freeletics. Take that market and money.
Since I have a smartwatch I would also like to be able to just switch to the next exercise with the watch (and go back in case I make a false click) and have the workouts complete my daily ring of activity. I don’t need much more than that.
So running + next exercise switch.