According to the federal government, the app doesn't intentionally collect any personally identifiable information or track people's locations.
On Wednesday, Premier Stephen McNeil said the app is not a "solution for everyone".
Nova Scotia reported no new cases of the coronavirus on Thursday, and said only three cases remain active in the province.
People can expect the results to be ready within 36 to 60 hours, depending on the volume of tests that Nova Scotia Health's lab is processing on a given day.
Nova Scotia says 1,024 cases are now considered resolved. Two of the cases are related to travel outside Canada, and the third case is a close contact, the department of Health and Wellness said in a news release.
The three individuals have been self-isolating.
If a user lets the app know they've tested positive for the virus, it will send an alert to other users who have been within two metres/six feet of that person for at least 15 minutes, letting them know they have potentially been exposed to COVID-19.
The Nova Scotia Health Authority's labs completed over 900 Nova Scotia tests Wednesday.- Communications Nova Scotia
P.E.I. had no new cases reported as of Tuesday.
Strang said imposing restrictions at the border is hard in any event, because of the volume of commercial traffic that transits between the two provinces and the number of people who live on one side of the border and work on the other. Most of the cases are related to two outbreaks in the Moncton and Campbellton areas.
"Our colleagues tell us the cases are in known facility, family, or social group clusters".
He said the outbreaks do not pose an increased risk to Nova Scotians at this time because there is no evidence of community spread.
Newfoundland and Labrador reported one new case Thursday, increasing the number of active cases in the province to nine.
People can also call 811 if they can't access the website or if they wish to speak to a nurse.