Equate is a math crossword for Android. Every row and column is an equation; drop the right numbers into the gaps so they all add up at once. 500 hand-tuned levels across 25 chapters, a daily puzzle that gets harder through the week, and a Zen mode with no timer. Hints explain the line they used ('4 x ? = 20, so 5'), so you learn instead of just filling squares. Plays offline, no account. Free with ads.