I emailed the developers of Symphytum, and got a response. Oirio Joshi wrote:
"Hello.
"A mobile version requires to rewrite the GUI part entirely, so that's probably not going to happen anytime soon, unless anyone is interested in contributing that. I think a mobile friendly GUI could be shared with android and other linux based mobile systems.
"Symphytum is more or less in maintenance mode, where smaller features and bug fixed can be expected but we, as a small team, don't have the resources for such a big change, but who knows what the future looks like."