I’m recently using the swim.com app for pebble time. Basically what the app does is that it logs the laps that you swim and also keeps track of the time. You can get an overview of your workouts either on the ios/android app or through the website. The watch app seems to work fine, however, I’ve noticed that it doesn’t log correctly if I use a certain lane in the swimming pool. Either there is something wrong with the app or the length of the swimming lane is shorter! Need to do research on it…