RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.

Spotify - Map shows when two people play same song at same time

Slickdeals.net - Slickdeals: The Best Deals, Coupons & Discounts on everything

Discover on Demand - Just like Spotify's Discover Weekly, but whenever you want.

Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.

Magic Playlist - Get the playlist of your dreams based on a song