I've been obsessed with logic puzzles for years, so I built one. GridSum: a 7×7 grid of numbers. Each row and column has a target sum at the edge. Select which cells add up to it. One solution. Pure logic. No guessing. ✅ Free ✅ Daily puzzle (fresh every day) ✅ 20 puzzle packs if you want more ✅ No forced ads, no pay-to-win If you like Sudoku, Kakuro, or anything that makes your brain work — give it a shot. 👇 iOS: https://apps.apple.com/us/app/gr...