Top-level questions for the research

For a given App, the top-level questions for our research on this App are:

• How effective is the App against COVID-19? Can it be quantified?

• Are there downsides, or risks, of using the App, and if so, what are they? Can they be quantified? Are there particular population groups of App Users that may be more at risk than others?

• Does the App, based the its current implementation status and usage that we find, have unique opportunities to enlarge its impact on the pandemic or further reduce downsides or risks? What recommendations can we make to the App Creator in the context of current world-wide best practices?