Hej Jed
Great job - congratulations and thank you for sharing :-)
I have tested it with my LGg2 Android phone - on Chrome, Firefox (with TiddlyFox) and with AndTidWiki+.
It works very nicely on both both browsers - with AndTidWiki the TopBar is behaving as if it's a little delayed - it is not imposing a problem for navigation though..
I prefer using the browsers because you can go fullscreen with them. It's not possible with AndTidWiki(+).
If I should use AndTidWiki I would hide the TopBar but then I would also use autosave changes - because the saveicon would be gone..
I was fiddling with the Icon Menu Settings - showing/hiding different menus to see how it would affect the screen estate - suddenly I felt trapped because hiding the Left Menu left me without any option to revert back to showing it - and the controls were gone :-)
Maybe the option for hiding the Left Menu should be a link to a tiddler instead - or it should automagically become a button/arrow on the right menu if the Left Menu is hidden?
This is without doubt the most mobile friendly theme I've tried for TiddlyWiki so far (both TWC & TW5). With your theme and menu design it feels very natural to actually edit/write stuff in TW on a smartphone. Navigating your menus on a touch screen is a breeze :-D
Once again - GREAT JOB!
Cheers Måns Mårtensson