Many do not https://en.wikipedia.org/wiki/COVID-19_apps#List_of_countries_with_official_contact_tracing_apps https://en.wikipedia.org/wiki/COVID-19_apps#List_of

Many do not https://en.wikipedia.org/wiki/COVID-19_apps#List_of_countries_with_official_contact_tracing_apps https://en.wikipedia.org/wiki/COVID-19_apps#List_of_countrie... US, UK, Brazil, South Africa, Mexico, Chile, Belgium, Sweden are significantly affected countries without one. I don't expect Germany to get a wow, only abscense of negative press.