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
7 years, 257 days, 5 hours 329 35,308,728