For comprehensive mobile sneaker exploration, it would be hard to top this new app from U-Box. Sneakers: The Complete App contains an interactive gallery of over 500 sneakers from 18 leading brands. You can filter by material, rarity, pattern, and other parameters and rotate each image 360° once you’ve landed on the one you want to check out. Dig deeper to find an interactive guide to a sneaker’s anatomy, a look in the collaborator’s studio, and much more. Normally $7, you can download the iPad app now for just four bucks. If your closet is filled with exclusive collabs, rare colorways, and other sneakers still sitting in their boxes, it’s an app you need.