I'd like to know when app or watchface updates are available and be able to easily get the updates

I’m using a Pebble Time 2 with an Android phone. I notice that when watchfaces and apps get updated, there’s no notification. Once I manually identify an update, it seems like I need to first uninstall the existing watchface or app and then reinstall it to get the updated version. Is there a simpler way to do this?

Once a day, I go into the Pebble phone app and select Watchfaces then press the center of my phone screen and slide down to update any new versions, then I select Apps and do the same thing.

They shourd also just automatically update after a bit, I think. How long have you waited before updating manually?