iOS Number Puzzle
Keep the right numbers. Make every sum exact.
Just Sum! is a relaxed logic puzzle about choosing the numbers that make every target total work. Match the sums for each row, column, and colored area, with no time limit and an endless progression of uniquely solvable boards.
A little logic, a lot of calm
Highlights
- Exact-sum logic — Think about the remaining totals for rows, columns, and colored areas at the same time.
- A unique solution — Every board is checked by a solver to confirm that it has one solution.
- Endless progression — Grow from 3×3 boards to 10×10 challenges across endless levels.
- Hidden “?” tiles — At higher levels, make logical decisions without seeing every number.
- Hints, statistics, and achievements — Best times, no-mistake clears, hints, and achievements stay on your device.
- Play in your language — Japanese, English, Spanish, Korean, Simplified Chinese, and Traditional Chinese.