It's probably not a good idea to make a decision for a specific app based on the average behavior across all apps, unless your app is "average." A calculator a

It's probably not a good idea to make a decision for a specific app based on the average behavior across all apps, unless your app is "average." A calculator app is an outlier; it is not an average app. It's also an outlier with real utility --- so it's something people are more likely to pay for.