0xedbGoogle details new 24-hour process to sideload unverified Android apps
https://android-developers.googleblog.com/2026/03/android-de...
The part in the flow where you select between allowing app installs for 7 days or forever is a glimpse into the future. That toggle shows the thought process that's going on at Google.
I can bet that a few versions down the line, the "Not recommended" option of allowing installs indefinitely will become so not recommended that they'll remove it outright. Then shrink the 7 day window to 3 days or less. Or only give users one allowed attempt at installing an app, after which it's another 24 hour waiting period for you. Then ask the user to verify themselves as a developer if they want to install whatever they want. Whatever helps them turn people away from alternatives and shrink the odds of someone dislodging their monopoly, they will do. Anything to drive people to Google Play only.
All apps should be open source and subject to verification by nonprofit repositories like F-Droid which have scary warnings on software that does undesirable things. For-profit appstores like Google and Apple that allow closed source software are too friendly to scams and malware.
I don't think that's a realistic suggestion as as the quantity of applications are huge who are going to spend time reviewing them one by one. And and even then it's not realistic to expect that that undesirable things can be detected as these things can be hidden externally for instance or obfuscated
I think compared to the alternatives, this is the best answer.
Even if you are a bank or whatever, you shouldn't store global secrets on the app itself, obfuscated or not. And once you have good engineering practices to not store global secrets (user specific secrets is ok), then there is no reason why the source code couldn't be public.