I’d thought that I do this since I did not discover this app this Christmas and it is still December, so lets start.
The Google Santa tracker app was released in probably 2019 in December and I was able to download it, and since then, Google has taken it down and is no longer available on the play store.
Here is how I discovered it.
I was scrolling through my apps and games on Google Play Games and I noticed something. The Santa Tracker App was there! Even though Google removed it from the play store, Play Games saves it and its code in its own database.
Here is the main page:

You can play games, and during the Christmas Eve day, you can see Santa delivering presents and where he is now.
I even discovered an easter egg in the app!
If you click on this person shown below, :

(the person with the hat next to the tree)
you will get an interesting blocky/pixelated retro screen:

If you scroll down, you will see all of the games and an interesting message:

Anyway, the reason why I made this post was just so that you know that there is this app and that it exists.
And finally, the tempting download button: