The Firefox Browser for android with tiddlyfox plugin seems to be working for me. I have a complex plugin packed tiddlywiki so it would appear to be the best option now.
My TiddlyWiki is a favorite in DropBox (Desktop and Android) and I open it from the dropbox location on the tablet into FireFox
I am using a Xoom tablet with Android 4.0.4
I did have to increase the timeout on loading because I have a big wiki
http://support.mozilla.org/en-US/kb/warning-unresponsive-script?redirectlocale=en-US&redirectslug=Warning+Unresponsive+scriptAlso Just running it then I have noticed some extended characters are not displaying correctly but they do save correctly.
Regards
Tony