I have grammarly on my computer and it's wonderful. I even pay for premium! But the app is awful. I really wish it worked, because in theory it would be so nice! But it freezes so often. I can rarely get through typing out a single message before it freezes on me, and I have to wait for it to reset to continue. Even trying to type this review with the keyboard ended with me having to swap to the samsung keyboard, because grammarly froze again.