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:

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

Total Exposure Unique Devices Candidate Hits
8 years, 364 days, 23 hours 358 42,134,644