Christopher Sauer

Measure your pulse with just a look at your phone! Works by detecting micro-blushes of the face, imperceptible to the eye. Give it a try if you can—it’s free and downloads in under a second.

Almost no one remembers to wash their hands enough, and remembering would save lots of lives.

So, we built a handwashing reminder that emails before mealtimes to help everyone (us included) do our part.