tasker would be the biggest thing for me (along with plugins like autoinput and autotools) but that had been mentioned a few times so ill go with some less obvi

tasker would be the biggest thing for me (along with plugins like autoinput and autotools) but that had been mentioned a few times so ill go with some less obvious things. syncthing (or resilio sync either) let's you sync any folder on your phone to other computers. either a two way sync or as a backup with things like photos going from your phone to your computer only. when I come home from talking photos for mapillary/openstreetmap the photos start syncing straight away and it's really fast since it's only syncing over the network and not going to the cloud. I have another folder that syncs across osmAnd's app folder so all my gps traces are accessible from my laptop I had an iphone for a few months but sold it because I found it to be too restrictive and wouldnt let you have this kind of a setup swipepad. let's you swipe in from the side of the screen to launch apps. this means you don't have to go back the the home screen every time you want to open something which is really inefficient way of doing things. you can also launch shortcuts (another android only thing as far as I know) that go straight to a certain part if an app instead of the main screen. like going straight to writing an email or sms, or start sound hound listen straight away. start an audio recording without opening the app. call a certain contact. run a tasker task. there lots of other similar launchers like swiftly switch that can be used at the same time. I also didn't see nfc being mentioned anywhere. has iPhone added nfc yet? i have lots of them all over the house that I use to toggle lights, start timers or add things to my shopping list or start music playing. (most of these are programed with tasker as well so they can do a few things at a time instead of just one action) you also don't need to install itunes just to do some basic things. huge plus :)