Rewardist - Digital 💳 loyalty cards for ☕ coffee shops
Kard - Maximize your credit card rewards & save on every purchase.
Shelfie - Get free and discounted Ebooks of your print or paper books
Card Curator - Win credit card rewards, points, and miles game
Sift App - Uncover bad network traffic on your phone
Privacy.com - Get a new virtual card for every transaction