DDEF Studios

Title 01 — Closed testing

Twenty-one puzzles,
new every morning.

Foldout generates a new set on your phone each morning — the same set for every player, with no account to create and nothing to download to play.

Today
Today’s fold
Streak 14 3 / 21 solved

Five kinds of puzzle

Word

Ladders, anagram hunts and ciphers, built from openly-licensed word lists and public-domain text.

Logic grid

Fill the picture from the clues, or bridge the islands. Both are proven solvable before they ship.

Chess tactic

Solver-checked positions with one winning line.

Strategy

Reversi, peg solitaire and sliding-block puzzles, cut down to five minutes.

Numbers

Sudoku, cage sums, Latin squares and shade-the-duplicates.

Title 02 — In development

Daily Tactics

One solver-verified chess tactic a day, generated on your device. There's a streak and a spoiler-free share card, and that's the whole app.

About Daily Tactics

Press & contact

Talk to the developer

Review builds, screenshots and answers, usually the same day.