Kepler.gl

The marketing page needs some work on mobile but otherwise a cool library.

Export your phones GPS pings and then use this to render a heat map of the most frequently used locations :)

That was a fun mobile challenge! I just exported my Google Maps Timeline, used ChatGPT to convert it to a CSV of points, and then made a heatmap with Kepler’s grid layer.. I had to tweak the color breaks a bit or else it only highlighted my home and (old) office