Fitbit Developers oversee the SDK and API forums. We're here to answer questions about Fitbit developer tools, assist with projects, and make sure your voice is heard by the development team.
Unfortunately it's not possible to build apps/clocks for Charge3 using the Fitbit SDK. You could do this with one of the smartwatch devices (Ionic/Versa/Sense) though. Some even have GPS in the device, so they could get the coordinates without using the phone.
Best Answer