So, after I found an AC adaptor that works for the Sigmarion 2 (9V). I got Pocket Scheme working on it.
I figured this might be a little better than using Tytn II (EMONSTER S11HT) if I were to use it on the go, but I'll have to see about that. The keys are much bigger than Tytn II (EMONSTER S11HT), so yeah. You can download Pocket Scheme here.