This app is all you need. – L-Lingo Learn Korean Review

Effectively implemented and simple chunks of important language points, this app has elevated my speaking confidence and skill like no other rinky-dink app I've wasted money on. Get this, do it once or twice a day. Each quiz only takes a few minutes. I recommend sitting down in a cafe and studying the grammar notes a bit. Then on the bus, at the bus stop, or any idle chance, bust out the quizzes and feel the language power grow. I'm in love.
Review by Hans Robertson on L-Lingo Learn Korean.