We're not talking about 0/1 here. There's making sure the app works and looks ok on the Duo and then there's building out Duo specific features. The works/looks ok is generally pretty easy with new devices. Just build with the new SDK and fix places where the app wasn't doing something likely already suggested by Apple. A big one will be safe areas which people often ignored except on the top and bottom.
As a professional programmer, it at least gratifies me to know this is the attitude I'm competing against.
I'm not an iOS developer, never made an app at all, I asked because I'm curious. What is it really to gain?
Nothing ventured, nothing gained.
Will you see noticeably more users or people choosing another alternative because you didn't specifically building the app for Duo?
I haven't done iOS development in a long time, but my understanding is that if your iPhone app is designed well and uses all of Apple's recommended methods, adjusting for different screen sizes and orientations is fairly easy.
If you decided to go cheap/easy/dumb from the outset, then you made your bed, and now you get to lie in it.
It’s likely that I will end up getting one of these, eventually.
I suspect all my apps will run OK on this. I have been designing for flexible screen dimensions since Day One (2012). It was a habit I already had, from MacOS development.
I am interested in seeing if I can leverage running on inside and outside screens. That might be interesting (but I don’t know if that’s possible. They may switch off the outer screen, when the device is open).
I’ll bet that Apple may ship an Apple Pen Mini, for these.