Ordo

Ordo is a grid puzzle built on guess and feedback. The day's board is a square of coloured tiles, each with a simple shape, shuffled out of order, and there is one correct layout. You swap tiles to try an arrangement and press Guess. The board then marks every tile: a bold border means it is in the right place and it locks, notches at the sides mean that kind of tile belongs elsewhere in this row, notches above and below mean elsewhere in this column, four notches mean both, and a faded tile belongs in a different row and column.

From those marks you reason out where everything goes. A locked tile settles a lot, and a tile that keeps its side notches only has to move sideways. The daily has no timer, lives or fail state. Your result is the number of guesses and swaps you needed, and a solve on the first guess counts as perfect. Boards run from 3x3 with four colours to 5x5 with six.

Everyone gets the same numbered puzzle each day, so results can be shared as a coloured grid without giving the answer away. The app tracks guesses, swaps, streaks and perfect solves. An optional purchase adds the archive of missed days, Ordo Expert (a second, harder daily with a guess limit) and more detailed stats.

Ordo is made by John Davenport and came out on the App Store in July 2026, with its last update on 29 July. A free web version at play.ordopuzzles.com served the same daily puzzle, but its puzzle list ends at No. 104 on 1 October 2026 and it has shown "Today's puzzle isn't ready yet" since. The app has no ads, accounts or sign-ups. It suits players who like a quiet visual logic puzzle over a word game.