
Relaxing math puzzles on a chalkboard full of doodles
Chalk & Sum is a relaxing math puzzle game for iPhone. Swap magnet tiles, add + − × ÷ and make the target number in chalk. 60 handmade levels, a daily puzzle, and endless Relax mode. No timers, no lives. Every chapter adds a doodle to your board. Free.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.