Table 2 Characteristics of the apps (n = 27)

Platform available

 iOS and Android

17

 Android only

8

 iOS only

2

Developer

 Private/commercial

19

 Government

4

 International organization

4

Implementer

 Private/commercial

13

 Government

10

 International organization

4

App use case

 Managing exposure to COVID-19

12

 Providing health monitoring

12

 Raising awareness

2

 Promoting health personal tracking

1