My impression of this is that Apple and Android still cannot 100% guarantee that your personal information is safe from apps, or that content is used as license

My impression of this is that Apple and Android still cannot 100% guarantee that your personal information is safe from apps, or that content is used as licensed. Apple's mitigation for this is aggressive curation of the Appstore, while Google attempts to automate this (there is a delay of a few hours), which is far more developer friendly. Hopefully over time Android and iOS will improve further and reduce information leaks in the platform, make granting permissions optional (no take it all or leave it), and perhaps add an ARM version of Intel's software guard extensions (SGX) so we can have mutual distrust between apps and the platform, and have the platforms be far more open by default.