eli5: When an app updates, how are people on the old version still able to use it?

Question

I know this isnt the case 100% of the time but could someone pls explain. sorry im dumb and bad at tech

In: 0

Answer 1

The servers the app connects to may be configured to allow more than one version for a while, as the app update won’t have reached everyone yet, and requiring an app update later found to have a critical issue could be a horrible experience.