"State health officials hope a new cell phone app will be a valuable tool in the fight against COVID-19 by letting people know if they've been exposed to someone who recently tested positive for the virus.
Coloradans began receiving push notifications for the app on Sunday. It's called Exposure Notification, and although the app will be automatically installed on iPhones, users will still have to opt-in. Android users will have to download the app manually."
Read more about it here.