Really impressive. – Russian Flip Review

I'm floored by the amount of content here. Plus I am able to study by word difficulty. That may sound unimportant, but there are times that I just want to restudy the words I am familiar with. At other times I want to try learning new and harder words. I can switch back and forth, and the app keeps a tab in the background of where I am in each difficulty level. It saves all that stuff without me having to do anything. Thoughtful polish and distinctions like that make this app great.
Review by S Fullman on Russian Flip.