I already use Duolingo, but feel as though it's not enough to propel my language skills and learn even more. Are there any German apps that are more grammar-based than vocab-based in the App Store (preferably free)?
A long time ago, I tried to use Duolingo too, but it's not an effective way for me. So I try many learning applications. My friend recommended an app named Ling app. Since last year, I have used this app, and now I have got an advanced level, and I can speak with German people. You can learn from your native language to German or other languages. I love it and so proud. Hope this can help you.