>Why rewrite and port to a platform (be it Lianja or anything similar) that is a niche platform? For that matter, why rewrite at all? Your goals seem to be for a more modern interface, not a rewrite of your entire app. With something like FoxInCloud you can convert your VFP to HTML/JS/CSS and still maintain the ability to develop in VFP or HTML/JS.
>
actually having locally installed apps on tablets for medical is one of the larger markets IMO.
You don't want to be dependant on WLAN and Browser speeds when making rounds,
replicated and often synched local data sound MUCH better.

> The only long term major not going anywhere platform right now is HTML/JS.

Which Lianja conviniently supports as well. Coding the GUI in JS in Lianja might be the wisest way to stay "installed" and/or "browsered".
If vfp was still developed, FoxInCloud might be more of an option, but as vfp cannot reach ARM devices natively...