Map Chart app for the Amazfit smartwatch.
The Amazfit app requires Zepp OS 3.0 (T-Rex 3, GTR 4, Balance, Bip 5 Unity, Active).
It does not work for older Amazfit devices.
If it works for your device, you can find the Amazfit app "Map Chart" in the app store of the Zepp phone app.

Please read the FAQ