I feel like my phone apps update constantly. In general, that’s a good thing, I assume. I figure they’re fixing bugs or whatever. However, I don’t run into issues very often, nowhere near the rate of updates, and nothing seems to change after the update.
Compare that to Steam games which update really infrequently and the changes are usually much more obvious.
It’s a number of reasons. One I don’t see already mentioned is that Apple and Google require apps to target the latest versions of their OSs and libraries. For example Google released a new version of the Google Play Billing Services library. All apps were required to update to the newest version by kid August (you could request a two month extension). So to the end user it seems like nothing has changed. But under the hood the app is now using the latest apis. This could also apply to non-Google/Apple apis. Maybe a change of the developers own api was necessary.