Logic Sum for Android

Quick overview of Logic Sum (Android, free)

Logic Sum is a free numerical puzzle for Android that asks players to place digits into colored regions so the combined totals meet given targets. The challenge lies in using deduction and number sense rather than speed, with each decision potentially affecting multiple areas at once.

Gameplay mechanics and goals

Players are shown a board of colored shapes and must insert numbers into cells so that the total for every shape equals its required sum. Because shapes can overlap, a single cell’s value may count toward more than one target, increasing the need for careful planning and foresight.

Visual style and session length

The interface is bright and uncluttered, designed to keep attention on the puzzle without distracting elements. Levels are intentionally short, making the game suitable for quick mental warm-ups as well as longer thinking sessions.

What you can expect from levels

• A broad span of difficulty, from gentle puzzles meant for relaxation to tougher grids that demand deeper reasoning.
• Increasing complexity through overlapping regions and higher target sums that require multi-step deduction.
• Concise stages that let you finish a puzzle in a few minutes, or linger longer on harder challenges.

Reasons to play

• Strengthens logical thinking and arithmetic skills through repeated, focused practice.
• Clear objectives and consistent rules make progress feel tangible and satisfying.
• Rewarding problem-solving loop: small successes encourage tackling more difficult puzzles.

Suggested alternative

If you want a different but similarly accessible title, consider Event Twins — Design Blast (free), which offers a different puzzle style and visual theme while keeping bite-sized levels and casual-friendly difficulty.