hadn't heard of this before, i see that the whole album is up on youtube. any particular sounds that you're looking for especially? (tracks, times, etc... ?) just skimming through, i'm hearing stuff that could be done with pretty much any synth, so i wouldn't be too worried about exactly what he's using.
from that link above it looks like he's using a Roland Juno-6 and JP-8X, for which there are free VST emulations of both. google for 'U-NO-60' (not bad, they have a better paid version called 'U-NO-LX v2') and 'PG-8X' (really good emulation, but the original synth itself is just so-so to begin with).
"mobile", as in iOS or Android? not sure what's available for Android, but with iOS there's all sorts of options. recording the synths from videos, etc might not give you what you want. then again, i guess it might.