DigitGrid: Two Brain-Training Number Puzzle Games in One Free App

DigitGrid combines two addictive number puzzle games: a math crossword where you solve equations, and a number matching game where you find pairs that add up to a target sum. Free on Android.

Introduction

If you enjoy number puzzles, logic games, or anything that gives your brain a gentle workout, DigitGrid might be exactly what you've been looking for. It's a free Android app that combines two distinct number puzzle modes in one place: Number Crossword and Number Match.

Whether you have five minutes on a commute or an hour to unwind, both modes are designed to be easy to pick up — but satisfying enough to keep you coming back.

Number Crossword: Math Meets the Classic Grid

The first mode takes the familiar structure of a crossword puzzle and replaces words with math equations. You're given an empty grid where every row and column represents a mathematical equation — and your job is to drag the correct numbers into the right slots so that everything works out simultaneously.

It sounds simple, but the real challenge is that a single number affects both its row and its column. You can't solve one equation without considering the others. This makes it a genuine logic puzzle, not just arithmetic practice.

The game is timed, so there's a satisfying tension between thinking carefully and moving quickly. It's particularly good for:

•   Kids learning arithmetic in a fun, visual way

•   Adults who want to stay mentally sharp

•   Anyone who loves Sudoku or logic puzzles and wants something fresh

Number Match: Find the Pairs, Clear the Board

The second mode is different in feel but equally engaging. An 8x8 grid appears, filled with random numbers. At the bottom of the screen, you see a target sum. Your goal: find two numbers on the board that add up to that target, tap them, and they vanish.

Keep finding pairs until the entire grid is cleared — but do it before time runs out.

Number Match has three difficulty levels that change how large the numbers can get and how much time pressure you face:

•   Easy: target sums up to 50, ideal for beginners or a relaxed session

•   Medium: numbers up to 100, requiring quicker mental addition

•   Hard: the clock becomes your main opponent — finish the board in time

The game tracks your best time for every sum value and difficulty level, so there's always a personal record to chase.

What Makes DigitGrid Worth Trying

Both modes share a few qualities that make DigitGrid stand out from the crowded puzzle app space:

•   Genuinely free — no paywalls, no energy bars, no forced purchases

•   Works offline — perfect for travel, commutes, or areas with poor signal

•   Randomly generated puzzles — no two games are the same

•   Clean, distraction-free design — the focus is on the puzzle

•   A hint system for when you're truly stuck

Who Is It For?

DigitGrid works well for a wide range of players. It's genuinely useful as an educational tool for children practicing addition and basic arithmetic. It's also engaging enough for adults who want a quick mental challenge without committing to a complex game. The two modes offer enough variety that you can switch between them depending on your mood.

Download DigitGrid

DigitGrid is free and available on Android. No sign-up required — just download and start playing.

Get it on Google Play

DigitGrid page:

https://www.balpap.com/digitgrid-number-crossword-math-puzzle