I've been using this language app for a while now, and it's been a bit of a mixed bag. As a free app, it's decent for picking up entry-level language skills, but I wouldn't spend money on it. There are issues with it freezing up and sometimes it even marks correct answers as wrong, which is frustrating. Plus, the constant ads for their services get annoying. The biggest letdown is that it often fails right when you need it most. After three years of using it for free, I can say it's okay for casual learning, but don’t expect it to be reliable when you're in a pinch.