Download COVID Alert
COVID Alert is Canada's free exposure notification app.
Download on the App StoreGet it on Google Play
Available for iOS and Android
Together, let's limit the spread of COVID-19. COVID Alert is an additional tool to protect yourself and your loved ones.
COVID Alert helps us break the cycle of infection. The app can let other app users know of possible exposures before any symptoms appear.
That way, we can take care of ourselves and protect our communities.
On this page
Your privacy is protected
How it works
Provinces where you can report a diagnosis
Other provinces and territories
One part of public health
How many people are using the app
Printable digital products and videos for understanding the app
Digital and printable products to promote the app
Share your story
Built in the open
Contact us
How it works
Provinces where you can report a diagnosis
Other provinces and territories
One part of public health
How many people are using the app
Printable digital products and videos for understanding the app
Digital and printable products to promote the app
Share your story
Built in the open
Contact us
Your privacy is protected
COVID Alert does not use GPS or track your location.
It has no way of knowing:
your location
your name or address
your phone's contacts
the health information of anyone you're near
Nobody will get any information about you or the time you were near them. Learn more about how COVID Alert protects your privacy.
It has no way of knowing:
your location
your name or address
your phone's contacts
the health information of anyone you're near
Nobody will get any information about you or the time you were near them. Learn more about how COVID Alert protects your privacy.
How it works
The app uses Bluetooth to exchange random codes with nearby phones.
Every day, it checks a list of random codes from other users who tell the app they tested positive.
If you've been near a user who tested positive within the last 14 days, through these random codes, you'll get a notification.
Learn more about how it works.
Every day, it checks a list of random codes from other users who tell the app they tested positive.
If you've been near a user who tested positive within the last 14 days, through these random codes, you'll get a notification.
Learn more about how it works.
More about how COVID Alert works
The app runs in the background and will not interrupt your activities.
Whenever you're near someone else with COVID Alert, both phones exchange random codes every 5 minutes.
The random codes change often and cannot be used to identify you.
Watch the video on how the COVID Alert app works.
Whenever you're near someone else with COVID Alert, both phones exchange random codes every 5 minutes.
The random codes change often and cannot be used to identify you.
Watch the video on how the COVID Alert app works.
What's an exposure?
The app estimates how near other app users are by the strength of Bluetooth signals.
An exposure depends on your contact with one or more COVID-19 cases over a 24-hour period.
An exposure is recorded if the contact is:
within 2 metres
for 15 minutes or longer
An exposure depends on your contact with one or more COVID-19 cases over a 24-hour period.
An exposure is recorded if the contact is:
within 2 metres
for 15 minutes or longer
Getting a positive test
If a user is diagnosed with COVID-19, they can choose to upload the random codes their phone sent.
They can also enter details to help narrow down when they were likely most infectious. Those details tell the phone which random codes to upload. If the person chooses not to provide details, the app uploads the random codes from the last 14 days.
The random codes go into a central server. No other information is sent to the server.
They can also enter details to help narrow down when they were likely most infectious. Those details tell the phone which random codes to upload. If the person chooses not to provide details, the app uploads the random codes from the last 14 days.
The random codes go into a central server. No other information is sent to the server.
Looking for exposures
Every day, whenever it has an Internet connection, your phone will get a list of the random codes from other app users who reported a diagnosis.
If it finds codes that match, the app notifies you that you've been exposed and explains what to do next.
Provinces where you can report a diagnosis
Use COVID Alert to report a COVID-19 diagnosis if you're in:
Manitoba
New Brunswick
Newfoundland and Labrador
Nova Scotia
Ontario
Prince Edward Island
Quebec
Saskatchewan
Other provinces and territories
It's still helpful to download COVID Alert even if you can't use it to report a diagnosis. That way, you'll be notified:
if you come into contact with someone from a reporting province or territory
when other app users in your area are able to report a diagnosis
One part of public health
COVID Alert is just one part of the public health effort to limit the spread of COVID-19.
Follow all public health guidelines in your area.
Use the app for the duration of the COVID-19 outbreak.
The app does not replace manual contact tracing by local public health authorities.
COVID Alert does not replace medical advice. If you get sick, contact your doctor or other healthcare provider.
How many people are using the app
App usage in Canada
November 10, 2020
Number of downloads
5,181,198
If it finds codes that match, the app notifies you that you've been exposed and explains what to do next.
Provinces where you can report a diagnosis
Use COVID Alert to report a COVID-19 diagnosis if you're in:
Manitoba
New Brunswick
Newfoundland and Labrador
Nova Scotia
Ontario
Prince Edward Island
Quebec
Saskatchewan
Other provinces and territories
It's still helpful to download COVID Alert even if you can't use it to report a diagnosis. That way, you'll be notified:
if you come into contact with someone from a reporting province or territory
when other app users in your area are able to report a diagnosis
One part of public health
COVID Alert is just one part of the public health effort to limit the spread of COVID-19.
Follow all public health guidelines in your area.
Use the app for the duration of the COVID-19 outbreak.
The app does not replace manual contact tracing by local public health authorities.
COVID Alert does not replace medical advice. If you get sick, contact your doctor or other healthcare provider.
How many people are using the app
App usage in Canada
November 10, 2020
Number of downloads
5,181,198
Provinces and territories onboard
8
One-time keys used
4,168
Printable digital products and videos for understanding the app
COVID Alert: Canada's COVID-19 exposure notification app (infographic)
How the COVID Alert app works (video)
Digital and printable products to promote the app
Share social media products about the COVID Alert app
Share printable and video products about the COVID Alert app
Share your story
Did using the app help you make informed choices for yourself or your family? We want to hear from you. Contact us by email with details about your experience.
Built in the open
The Government of Canada is building and continually improving the COVID Alert app in the open.
COVID Alert mobile app advisory council
COVID Alert mobile app open source repository
COVID Alert open source server repository
COVID Alert portal repository
Report a vulnerability
Accessibility statement for COVID Alert
Privacy assessment for COVID Alert
Contact us
Before you contact us, check the COVID Alert help section.
Phone: 1-833-784-4397
Hours of operation are from 7 a.m. to midnight EST
Interpretation service available in more than 200 languages
Teletypewriter (TTY): 1-800-465-7735
Monday to Friday, 8 a.m. to 8 p.m. Eastern Time
Email: hc.AlerteCOVIDAlert.sc@canada.ca
Follow the Canadian Digital Service (CDS) on twitter for updates about COVID Alert:
English: https://twitter.com/CDS_GC
French: https://twitter.com/SNC_GC
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