Unbelievably good.
This app is for someone who really wants to study Quran and knows nothing. Its free but it makes you want to subscribe and pay just because you feel grateful. From word to word deep translations, to all kinds of tafseer. Grammar. Qurans style explained at each ayah. Additional articles linked to each ayah. Line by line recitation. Word by word pronounciation. Memorisation mode that repeats each ayah. Its got a lot of support for Urdu speakers as well. Please download this. Its the best out there along with Quran.com and all their affiliates.