CRAYFIS:

The app that turns your phone into a cosmic ray detector. No joke.

Join the first and only crowd-sourced cosmic ray detector. You might just help discover something big. Learn more about it

Join our legion of beta testers:

SPREAD THE WORD:

Help us reach our target of one million users by sharing with your friends:

Total Exposure Unique Devices Candidate Hits
17 years, 322 days, 2 hours 759 120,279,481