Project was started.
You'll find sources here: https://github.com/riccione83/...

Feel free to collaborate!

What does it do?

@DucksCanCode looking at it briefly I'm guessing it is to do with measuring a journey by sea level. Italy is quite mountainous so it would be a good location to run tests as shown in the image, the graph likely shows meters above sea level over the course of the journey. I could be very wrong on this mind. Just my two cents.

Also feel free to post this in the "Collabs" section of this app if you are looking for collaborators.

The app is available in the App Store!
https://appsto.re/it/V7kBlb.i