[rogerbinns]

Another angle being missed is that Android won't auto-update apps if they have new permissions (modulo some minor details). The developers I worked with always added more permissions to their initial app versions for things they weren't using, but might in the future.

[digi_owl]

That is a Play thing, not a Android thing, iirc.

Still, with the latest change in permissions handling in Play, it will happily auto-update an app if the new permission(s) are in the same category as a previous one...