Sum45

Swap, think and solve through clever number puzzles. Start with 16 Campaign levels and unlimited Random 3×3 boards. No ads and no subscriptions.

Every row. Every column. One perfect sum.

Sum45 is a clean number puzzle about swapping tiles until every row and column matches its target. The rules are simple, but each board rewards planning, logic and the perfect final move.

PLAY YOUR WAY

• Campaign — Work through 135 unique levels across Easy, Medium and Hard.

• Random Puzzles — Generate unlimited 3×3 puzzles, with larger 4×4 and 5×5 boards in the Full Game.

• Sum Rush — Solve quickly against the clock. Every completed puzzle adds 10 seconds.

• Infinity Mode — Clear matching lines, build combos and adapt to special tiles.

BUILT FOR PUZZLE PLAYERS

• Helpful interactive tutorial • Optional hints • Locked tiles and changing board sizes • Perfect-score challenges • 20 achievements • Game Center leaderboards • Light and dark themes • Core puzzles can be played offline • No ads and no subscriptions

FREE TO START

The tutorial, Campaign levels 1–16 and unlimited Random 3×3 puzzles are included. A single optional, non-consumable Full Game purchase unlocks Campaign levels 17–135, Random 4×4 and 5×5, Sum Rush and Infinity Mode.

Think. Swap. Solve.