Basis is a health tech start-up based in San Francisco that developed a fitness and sleep tracker. My team worked on the web application, and I created all of the interactive charts, which were built with D3.js. The charts ranged from line and bar charts to hypnograms and heat maps.

Launch Project

2012 - 2014


The hypnograms displayed a person's light, deep, and REM sleep cycles, as well as when they tossed and turned. The entire chart was a hot spot and users could mouse over the chart to see more details.



Basis Science

  • Tyler Craft
  • Nathan Duran
  • Heath Withers