VideoLAN @videolan App Stores were a mistake. Currently, we cannot update VLC on Windows Store, and we cannot update VLC on Android Play Store, without reducing security or dropping a lot of users… For now, iOS App Store still allows us to ship for iOS9, but until when?
No, that is wrong, the app developer signs the app with their private key, sends it to Google, google scans ans verifies the app, and add their signature with their own private key.
The app can thus be verified to have been built by a specific developer and verified by Google before publishing, without breaking trust