As just an app it would rate 4 1/2 to 5 stars. I sadly not only purchased this app, but the running bundle. This is not just an app. It is still advertisement. I paid for this but still get ads; zen labs? I get it, yes every time I open the app! Can I get rid of it and just go running? You have more apps?! I get it, I just want to run. If I can get rid of these I would. Not finding much in settings to alleviate my pain. Yes the watch app does not sync well and freezes up. I liked the workouts, but chose to stick with another app to avoid being frustrated on my runs with this flaky app.
Drwmstr about C25K® 5K Trainer Pro, v3.7