appchk Results / Compare
Comparison groups do not compare a single application against another. Instead comparison groups cluster multiple applications into a single, logical group. For example, paid-vs-free apps could be a comparison group.
Example: App Type
has 3 groups with 32 appsSample comparison of the few lists found at Results / Lists
iOS 14 Study: Region Comparison
has 3 groups with 75 apps75 randomly selected apps from three continents.