The only ways you can track activity outside of Grokker would be through a wearable device like a Fitbit, Garmin, or Apple Watch, or through a smart phone. Here is a link from the help center that can help you track workouts using a smart phone: https://support.grokker.com/hc/en-us/articles/360022454652-Can-I-track-my-outside-workouts-if-I-don-t-have-a-wearable-device-. Those are the only two methods that Grokker uses to track activity outside of the site.