Looks nice, love the intuitive layout already saw an app I want to try out.

Quick feedback: - include the mac/windows/apple/android... on the first screen

- have all 5 options visible at all time but only use the color logos when it exists

- "switch" categories on the left side, desktop/mobile/... on top (there should be more categories and the devices will only ever be 6 - hopefully)

Maybe include a $ sign ? Maybe include a form to submit apps ?

Keep up the great work !!!