How do i install #ubuntu touch .click packages on a debian based mobile operating system e.g. #pureos

Also given the limited #mobile app market on linux platforms, is there a way to develop an compiled for the right architecture to run on any OS (html i suppose would do that). Are there efforts to make all KDE, Sailfish, Gnome, Ubuntu touch, Mobiam, etc based apps compatible to run on each others platforms (e.g. Freetube ....)
(i firmly think they should)