OK is a free mobile app designed to be a one-stop shop for all things entertainment and social media. With OK, you can stay in touch with friends and family by sending messages, making voice calls for free and post your latest photos. Watch new and trending videos and even listen to music and check out your friend’s playlists. Like all social media apps rolled into one, OK is always being updated with new things so you’re always up-to-date with the latest news.