More than 100,000 people use the app. 1) Auto back up on the cloud. 2) Sync up addresses across multiple android device. 3) Share stored addresses, current location, phone numbers and email ids with one click. 4) Create groups of your addresses and color them to identify them easily. 5) Export all the addresses to an excel file, which can be used to recover your addresses when you change or reset your phone. App works great as a Christmas card list - just names and addresses