Simple and Easy!
Just sum the numbers and reach the highest value!
Compete with friends to see who reaches the highest value through Game Center and Facebook.
Need help? Watch our Walkthrough or sign up and make your contribution today.
iOS Compatibility & Supported Devices
123 Sum! requires iOS 7.0 or later, and supported on the following devices: iPhone 7 ,iPhone 6 ,iPhone 5 ,iPad 3 ,iPad Mini and iPod Touch 5G or newer.
Click the button below to download it from the iTunes store using your iPhone or visit the app's download page for android and other platforms.
Developer site: 123 Sum! support
Technical support & help
Having trouble with the game? Report issues and get help here.