The Unending android UI is much smaller than the Ending android UI. Just a picky complaint because you made a nice port, however it was much easier to see on Ending. You can pan in this game now, so why not zoom?
I have done the bare minimum to port the desktop version to mobile, it is a desktop app first I'm afraid.
I'm not sure if you mean zooming the actual gameplay or the surrounding user interface, both of which have technical problems as the effects processing would need to be remapped and any user interface would require lots of additional rules to cope with boundaries being scalable - not to mention extra UI indicators to let the user know they can zoom and that other things are zoomable.
Then finally this would have to be back-ported to the desktop version, splitting the UI further.
Sadly not so simple. But I will add this to my list of requests and look for ways to add such features. Thanks for letting me know.