What's a decent Android app for learning some basic Spanish before heading down to Mexico for that job?

Look, I needed to pick up some Spanish quick before heading south. Busuu ain't perfect, but it gets the job done. The voice recognition is a bit wonky, especially with my Denver accent, but the lessons are short and to the point. I like that you can download lessons, so even if I'm out in the boonies with no signal, I can still get some practice in during lunch. The interface is pretty straightforward, even I could figure it out without the tutorial. It's not built like a brick house, but it hasn't crashed on me yet, even after a couple of drops. Battery life seems okay, but I always keep a power bank handy anyway. Don't expect miracles, but for learning some basic phrases, it's not a bad deal. Beats trying to mime everything.