I downloaded the app and played with the samples provided. After about 30 minutes, you are urged to subscribe. First, it is offered for $59.99, and a few minutes later it is offered for $29.99. After purchasing the pro version, a completely different format was presented. The lesson was changed to a pathetic teacherless classroom book style format, without hearing the words pronounced. It changed to multiple-choice or filling the blanks type of endless quizzes. This is such a scam. I contacted Apple and received a refund.
Bottom Line: No, I would not recommend this to a friend