Two things I made
Baseball.
Running.
A pitch you can throw in the browser, and a running log on my phone. Open one if you want to see how it works.
01
Magnus
Throw a baseball in the browser. Change the speed and the spin, and the path changes for real — not like a video game.
See how it works →
02
Runalysis
I start a tracker while Google Fit records the run. It keeps a series of points I can compare, analyze, and archive — including a fastest stretch that starts in the middle of a longer run.
See how it works →