[usrusr]

With free/in-app apps, a popular workflow for selecting an app to actually use is install half a dozen of the offerings, give each a test-ride worth a few seconds and keep the one that seems to best match personal usage patterns. 20% retention after the first five minutes might actually be a really good value!

If you do not have a means to tell those short-lived uninstallations from uninstallations by long-term users, those numbers are about as meaningless as comparing the number of play store page visits to the number of installations. Remember when the first online retailers panicked about abandoned virtual shopping carts?