[Cdesja5]

I like my Sony T1, my mother tongue is French but I find it useful to have a good dictionary. It won't conjugate your verbs however and won't really help with gender except superficially.
I also have a tablet (2 actually) and use Aldiko as reading app, it opens google directly in the app. A good predictive keyboard can also be useful if you are writing, I use SwIftkey on the tablets.