Rijunox

RunnerUp is an app ive been using for a while and it does the basic gps tracking for your activities and even has an option to tell you if your pace is slower or faster than you set. You can connect it to your Strava account to upload data to if you want, but otherwise the data is on your device. I don’t know about smartwatch compatibility, but I use the phone app and just put my phone in my Nathan’s Belt.

Sounds like a song title “it’s you, her, and the CIA”