Last updated
COVID Alert Logo.png
COVID Alert application screenshot.png
Initial releaseJuly 31, 2020
Operating system Android, iOS
  • 40 MB (Android) [1]
  • 12.1 MB (iOS) [2]
Standard(s) Exposure Notification [3]
Available inEnglish, French
Type Digital contact tracing
Website Official website OOjs UI icon edit-ltr-progressive.svg

COVID Alert (French: Alerte COVID [4] ) is the Exposure Notification service app for the country of Canada. It launched in the province of Ontario on July 31, 2020, and became available in nearly all Canadian provinces by October of that year, excluding Alberta (which is continuing to use its existing, BlueTrace-based app instead), and British Columbia.


As with all other implementations of EN, it uses Bluetooth to broadcast and receive randomly-generated IDs to and from the smartphones of other COVID Alert users within the user's vicinity. If a user later tests positive for COVID-19, they can choose to anonymously flag their IDs within a specific timeframe, allowing others to be notified of a possible exposure. [5] As with all other EN apps, COVID Alert requires a smartphone with Bluetooth Low Energy support running Android 6.0 "Marshmallow" or iOS 12.5 [6] and newer.

In September 2020, it was reported that the app had at least 3 million users. [7]


On June 18, 2020, Prime Minister Justin Trudeau announced that the federal government would partner with enterprise technology company BlackBerry Limited and ecommerce firm Shopify to develop a voluntary, anonymous contact tracing app to manage the COVID-19 pandemic in Canada. [8] The app was developed by the COVID Shield project, an open source reference implementation backed by volunteer employees of Shopify and the Linux Foundation Public Health initiative, and the Canadian Digital Service, with BlackBerry providing security guidance. [9] [10]

On July 23, after a delay from an originally-anticipated soft launch in early-July, Canadian Digital Service announced that it would begin beta testing the COVID Alert app in Ontario. [11]

The app officially launched on July 31 in Ontario; Trudeau stated that the app does not replace manual contact tracing, and that other Canadian provinces would adopt the app "soon". [5]


By October 2020, all but two Canadian provinces had adopted COVID Alert with full support for reporting. [12] In unsupported regions, the app can be used to receive notifications of possible COVID-19 exposures involving users who reside in a supported region, but users cannot send reports of their own positive infections. [13]

Coverage by province & territory
Province/TerritoryReportingStart dateNotes
Flag of Alberta.svg Alberta NoSee: ABTraceTogether
Flag of British Columbia.svg British Columbia No
Flag of Manitoba.svg Manitoba Yes
Flag of New Brunswick.svg New Brunswick Yes
Flag of Newfoundland and Labrador.svg Newfoundland and Labrador Yes
Flag of Nova Scotia.svg Nova Scotia Yes
Flag of Ontario.svg Ontario Yes2020-07-31
Flag of Prince Edward Island.svg Prince Edward Island Yes
Flag of Quebec.svg Quebec Yes
Flag of Saskatchewan.svg Saskatchewan Yes
Flag of the Northwest Territories.svg Northwest Territories Yes
Flag of Nunavut.svg Nunavut No
Flag of Yukon.svg Yukon No



Alberta had already deployed its own encounter logging app, ABTraceTogether (which is based upon Singapore's TraceTogether app and the BlueTrace protocol), in May 2020, describing it as the first of its kind in North America. [14] In comparison to COVID Alert, it provides contact tracing details directly to Alberta Health Services, but cannot run in the background on iPhone due to iOS limitations (requiring it to be open and in the foreground in order to operate correctly). [15] [16] The app has faced criticism over this limitation and possible privacy concerns, with calls for the provincial government to migrate to COVID Alert instead to assure more efficient operation on iOS, and interoperability with other provinces. [17] [18]

In August 2020, the Alberta government accused federal officials of "interfering" with its ability to work with Apple on releasing updates to ABTraceTogether to address these shortcomings. Later in the month, the province announced plans to "migrate" ABTraceTogether users to COVID Alert, [19] [20] but this did not actually occur. [12] In October 2020, members of the United Conservative Party (UCP) were heard ridiculing COVID Alert as "Trudeau's app" during Question Period, prompting Mayor of Calgary Naheed Nenshi to call for the province to adopt the app, and warn against the "politicization of public health". [21] [22] In an October 30 radio interview, Prime Minister Trudeau called upon the UCP government of Premier Jason Kenney to adopt the app, and suggested that Alberta residents download it so that it could still detect exposures from individuals from outside of the province, and to be ready if it were to be adopted. [23]

On November 6, Premier Kenney stated that Alberta would not adopt COVID Alert, stating that the province would no longer be able to operate ABTraceTogether if it did, and that the latter was "from our view, simply a better and more effective public health tool". [24]

British Columbia

British Columbia is not using COVID Alert, with provincial health officer Bonnie Henry stating that the app would require "modifications" in order to be used in the province, citing issues such as how long it stores contact tracing data. Henry suggested an approach based on using check-ins to identify exposures by locations and timeframes. [25]

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  4. "Téléchargez Alerte COVID dès maintenant". aem. 2020-07-31. Retrieved 2020-08-01.
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  25. "B.C.'s top doctor says COVID-19 app would 'cause more concern' if activated in the province". Global News. Retrieved 2021-01-13.