Oddbean new post about login | logout Got it! I was concerned about installing apps outside the Playstore, and if there was an update through the Playstore, my phone might force the update through the native store. Thank you!
Well it's not obvious. I only started noticing this once I developed my first apps. And somehow google play could update my manually downloaded test APKs as soon as my app got released. The magic is in the signing key :)