300 levels, all proven
Each level was solved by the game itself before it shipped. The length of that solution became par, so the three-star target is a route that is known to exist.
Puzzle · Android
Most sorting puzzles shuffle at random and hope. A random deal can look perfectly normal and still be impossible — and you only find out after ten minutes. Screw Sort solved all 300 of its levels before shipping them, so a board that looks hopeless never is.
Each level was solved by the game itself before it shipped. The length of that solution became par, so the three-star target is a route that is known to exist.
You can always finish from where you are. If it feels impossible, it is not — undo as far back as you like, or take a hint from the solution.
All 300 levels are inside the app. No download on first run, no server, no account. It plays on a plane and on a dead SIM.
A fresh Daily Challenge every day, with a streak worth protecting and coins for finishing it.
Nothing counts down and nothing runs out. Put it down mid-level and the board is waiting exactly as you left it.
No account and no profile. Your progress stays on your phone and is never uploaded anywhere.

Screw Sort is free. It shows a short advert between some levels, and offers you a video you can choose to watch in exchange for a hint or an extra holder. Adverts never interrupt a level in progress, and the reward ones are always your decision. There are no in-app purchases and nothing is locked behind money.