Not sure if anyone's on the fence about the mobile port of Collection of Saga: Final Fantasy Legend, which was released around a month ago. I picked it up after waffling a bit due to the $20 price tag.
I've been impressed so far; I mean, it IS just a port/remake of the three games, but the emulation is good, the buttons can be easily rearranged on screen, it supports portrait/landscape (big plus for me - I often play one handed in portrait mode), the fast forward is pretty much the perfect pace (and doesn't speed up the music). Even though the games can be saved anywhere on the map, it still keeps around "continue" state if the app is closed/slept.
I don't know if I'd recommend it for someone totally new to the games - FFL 1 is weird/obtuse and FFL 3 is kind of a boring standard RPG with only a touch of the weird SaGa-ness to set it apart. 2 is the real standout, but it's still a 8-12 hour RPG without turbo mode.
I'm particularly confused that it doesn't seem to have any kind of built-in manual, given how much you'd be lost in FFL1 in particular without knowing how mutants/humans level up, but otherwise it's a good package.