Paribus - Find out for free if online stores owe you a refund!
Stocard - All loyalty cards on your smartphone!
Lolli - Earn bitcoin when you shop online
Key Ring Reward Cards - Tired of all the loyalty cards dangling from your keys or stuffed in your wallet?
Slice Watch - Get an email when an item you've added drops in price 💸
CardStar - Leave those bulky plastic “reward cards” and “club cards” at home!