This is a site similar to Kahoot and Quizlet Live but ranked higher in the several blogs I read. You can play live with the students, which I think is the most fun, or assign it as homework and they can review using it at home. You are able to see each student's responses or the class' responses as a whole to see where further instruction or review would be beneficial. Students can see the questions and answers when they finish the quiz for review. You can also print responses for students so they can see what they need to work on.
Perhaps the best part, it's SUPER easy to use other people's whole quizzes or just grab certain questions. You can make a customized review quiz in little time at all.
You can play for free on any device with an internet browser.
Website: https://quizizz.com/
Apple App: https://itunes.apple.com/us/app/quizizz-student/id1160249042?mt=8