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COVID Alert uses Bluetooth to exchange random codes with nearby phones. It does not use or access any location data. COVID Alert works by determining how far away other phones are by the strength of their Bluetooth signal.

Several times a day, COVID Alert checks a list of codes from people who tell the app they tested positive. You’ll get a notification if a code you received matches one of the positive codes.

If you test positive for COVID-19 you will receive a one-time key with your diagnosis to enter into COVID Alert. The app asks permission to share your random codes from the last 14 days with a central server.
Other phones using COVID Alert check the central server periodically throughout the day. If they recorded any codes that match the codes in the central server, their user will be notified that they were exposed.

COVID Alert has no way of knowing:

-your location - COVID Alert does not use GPS or location services
-your name or address
-the place or time you were near someone
-if you're currently near someone who was previously diagnosed

Provincial and territorial governments are working to support COVID Alert across Canada. In some places, people cannot yet report a COVID-19 diagnosis through this app.

It’s still helpful to keep COVID Alert on, no matter where you are. That way, when people are able to report a diagnosis, you’ll find out if you were near them.

COVID Alert was built by Health Canada with the Canadian Digital Service on the private exposure notification framework by Apple and Google.

Ratings and Reviews

4.8 out of 5
2.1K Ratings

2.1K Ratings

Agent050 ,

Feel safer already

Such a simple and easy to understand app. I appreciate the clarity on their commitment to privacy and how they outline exactly what information the app is using to trace the virus. Every Canadian should download it.

Samuel Z. Sha ,

Please do your part

This is my first time writing a review in App Store. Canada is doing great in containing the virus, and we must keep it until we finally win this. Please do your part by downloading this app. It’s simple and safe.

Googilmaps ,

Good simple tool to protect your loved ones

I was part of the beta and this app has been great so far. Hasn’t affected my battery or Bluetooth or anything and just runs in the background. Please ask your family and friends to download! It will let you know if you need to take precautions before you show any symptoms.


Health Canada
8.9 MB

Requires iOS 13.5 or later. Compatible with iPhone.


English, French

Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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