Here's a video explaining the game. The whole game. You swipe. That's it. Oh, and if you lose your party, you can pay (real money) to revive them. There's a gil counter but it doesn't seem to do anything. You randomly find equipment after battles but it just marginally increases a few classes' attack power. There's no element of choice, there's very little element of strategy (if an attack hits the entire front row, try to only have one person in the front row.) It's just a thrown-together attempt to beat some cash out of a ten-year-old dead horse.
Oh, and did I mention that there's in-app purchases? Aside from paying money for continues in battle, there's $35 worth of Classic Characters gated behind $1 purchases, but you don't get to pick who you get - you just pay the dollar and pray. And there are three maps locked away at $4 apiece. If you wanted to unlock everything, it would cost you $51. Not counting revives. For a game where you just mindlessly swipe at the screen.
Yeah. Stay away.