I'm attempting a front end for OCA. But starting with a reader (I figured that once I had the connection part sorted everything else would come eventually but...). Using vuejs because why not learn something completely new to go with the completely new thing x_x but on the bright side theming (which I'm half-decent at) is really, really easy. And if I need an intermediary database (which if @jrej's experiences with @inkito are anything to go by is a possibility) I'll...figure it out much later x_x

Mobile only as in an app without even an accompanying webapp?

LoL "collab" on the backend will probably consist of you going "oh this is really easy" and me going "..." xP