Many consider software testing to be necessary yet given the nature of testing and practical project constraints it cannot be comprehensive or complete. The resulting software has bugs including those that affect some users. Analytics of usage of apps may help illuminate testing that has been performed on existing releases and also inspire improvements to future testing. The Android ecosystem provides unusually rich analytics tools for developers of apps released in Google Play so my research focuses on this ecosystem to evaluate several analytics tools including Google Play Console, Android Vitals, which are integrated into the platform and the operating system, together with additional mobile analytics offerings from Google and Microsoft.