One grid, one hidden path. Add, subtract, multiply, and divide your way from start to goal. Land exactly on the target. Just you and the numbers.
Available on the Apple App Store.
Routesum is a number maze for people who like to think
Every puzzle is a grid with a start cell and a goal cell. Your starting number waits on the calculator at the top. Step onto any neighboring cell and its operation (add, subtract, multiply, or divide) is applied to your running total. Keep stepping, watch the number move, and arrive at the goal with your value exactly equal to the target. There is one clean route through every board. Your job is to find it.
No sliding tiles, no word lists, no luck. Just arithmetic, a little planning, and the quiet satisfaction of a number that lands precisely where it should.
HOW TO PLAY
Tap the start cell to load your opening number.
Move to an adjacent cell to apply its operation.
Watch your running total rise and fall on the calculator readout.
Reach the goal exactly on target to solve the route.
WHAT’S INSIDE
Four difficulty tiers: 4×4, 5×5, 6×6, and 7×7 grids, from a gentle warm-up to a real head-scratcher.
Fresh puzzles every time, each guaranteed to have a clean, solvable route.
A guided first run that teaches the rules by playing, not by reading.
A calm, distraction-free board that keeps the focus on the puzzle, not on clutter.
Stuck? A gentle hint points you toward the next step.
Routesum rewards the part of your brain that loves order of operations. Trace a route. Hit the target.
Routesum is developed independently and is not affiliated with Apple Inc.