What's New

New and improved gameplay.

Ability to watch ads to advance 5 levels.

App Description

Test your mental math skills in this brand new and challenging game.

Start at 0 and add each number that flies across the screen. When they have all gone across, type the total sum correctly to advance to the next level. Each level, add one more number than the last.

You have three lives, but you can use a continue if you lose them all to keep going. More continues are available for purchase in the store. Compare your high scores with your friends and every player around the world through Game Center.

iPhone Screenshots

(click to enlarge)

Chain Addition screenshot 1 Chain Addition screenshot 2 Chain Addition screenshot 3

App Changes

  • January 08, 2015 Initial release
  • February 11, 2015 New version 1.01
  • February 11, 2015 Price decrease: $0.99 -> FREE!
  • February 21, 2015 New version 1.0.2
  • June 12, 2015 New version 1.1
  • August 20, 2016 Price increase: FREE! -> $0.99
  • August 20, 2016 Price increase: FREE! -> $0.99
  • November 09, 2016 Price decrease: $0.99 -> FREE!

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