Proofline

A fresh logic proof every day, plus 150 included levels across three difficulties. Read the clues, find the one true order, and track every solve.

Every clue points to one true order.

Proofline is a focused logic puzzle about arranging a short line of symbols. Read the visual relationships, move the symbols into place, and check whether every clue is true.

Start with the Daily Proof, refreshed at midnight in New York. Then explore 150 included Level Proofs across Easy, Medium, and Hard difficulties.

WHY PROOFLINE

• Small puzzles built around real deduction • Essential clues with one uniquely solvable answer • Daily difficulty that builds through the week • Drag-to-insert and quick tap-to-swap controls • Optional hints, undo, and an always-available clue guide • Detailed statistics for Easy, Medium, Hard, and Daily play • No account required • No time limit

Proofline is free with advertising. A one-time $4.99 Remove Ads purchase removes all ads; earned hint rewards double automatically without watching a rewarded ad. No subscription.