1.16K reviews
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About this app

CO Exposure Notifications is the official Exposure Notifications app of Colorado and the Colorado Department of Public Health and Environment. Exposure Notifications is a voluntary new service developed in partnership with Google and Apple to help slow the spread of COVID-19. No GPS, location information or personal identifiers will ever be collected, stored or shared by this service.

CO Exposure Notifications can quickly notify you if you've likely been exposed to COVID-19. Knowing about a potential exposure allows you to reduce the risk to your family, friends, neighbors and community.

By enabling Exposure Notifications, whenever you are within 6 feet of someone for at least 10 minutes, both phones will exchange secure, anonymous tokens using Bluetooth. If another user you’ve been near tests positive for COVID-19, they can upload their result to the app which will send a push notification to you and anyone else their phone has exchanged tokens with recently, notifying you to a possible exposure.

If you test positive, you can easily and anonymously notify others to help stop the spread of COVID-19.

To learn more, please visit https://covid19.colorado.gov/Exposure-notifications
Updated on
Aug 19, 2022

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Health and fitness and 2 others
Data is encrypted in transit
Data can’t be deleted
1.16K reviews
William Funk
January 21, 2022
As other users have stated, it is almost impossible to convince a wider group at large to download this app significantly enough. The user base is so widespread that it is unlikely you would even run into someone with the app on their phone. You need to keep your Bluetooth on at all times, and allow your device to check in with other devices over that connection, which is unsecured. Overall an unsafe final design that doesn't meaningfully accomplish much. Didn't serve me once during the pandemic
106 people found this review helpful
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Kirk Metz
November 11, 2022
On the UI, there's a button within a button (which is bad UX IMO). There's a big button (that's not obviously a button to me) labeled "Share your test results to help stop the spread of COVID-19" and on that same button is a smaller very obvious button labeled "see history". I would recommend a seperate button to the left of "see history" that's labeled "share results" or similar. That'd be much more obvious. Clicking the bigger button allowed me to submit test results.
3 people found this review helpful
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Brian Clancy
September 30, 2022
In theory, it's a useful app. At some point I set my Android phone to "Battery Saver" mode. It basically turned this app off. I didn't discover that until some days later...after I had gotten COVID for the first time, after having dodged it for two and a half years. I turned my phone back on in time for it to inform my wife that she was exposed. Before using Battery Saver in Android, go out and exempt this app in Settings. They failed to advise this when installing the app.
9 people found this review helpful
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What's new

Bug fixes and performance improvements