Table 1

The three apps and their descriptive statistics

AppOperating System (OS)First release dateDownloads (n) (est.)Versions since first releaseReviews (so far)
Reviews (n)Average stars
NHS COVID-19Android13 August 202012 500 000+ (www.bbc.co.uk/news/technology-54326267)1617‚ÄČ9052.8
iOS60212.7
Protect ScotlandAndroid10 September 20201 270 000+ (prod.news.stv.tv/scotland/more-than-a-million-download-scotlands-tracing-app)610183.8
iOS1953.2
Stop COVID NIAndroid28 July 2020375 000+ (play.google.com/store/apps/details?id=net.hscni.covidtracker)63172.8
iOS1272.3
  • OS, operating system.