Sequence Lock — Pattern IQ

Four glyphs in a row, and a fifth you have to work out. Shape, count, size, fill, position — one of them is changing by a rule, and your job is to name it before you answer. What separates this from a quiz app is what happens after you choose. Every answer, right or wrong, is followed by the actual rule written out: which property moved, by how much, and why the other three options were wrong. You leave each puzzle knowing something. WHAT IS IN IT • 100 puzzles in five families: – Shapes and orientation – Counts and sizes – Fill and texture – Position and motion – Grids and matrices • Five difficulties per family, from a single property changing by a small fixed step, up to three properties moving at once or a step that accelerates • Practice mode with no lives and free hints, for working through a family without pressure • A written explanation after every single answer • Streak, accuracy and best-streak tracking • Coins earned by solving, spent on hints ACCESSIBILITY Colour is never the only signal. There is a colour-vision setting, an option to label shapes in words, high contrast, and reduced motion. NO NONSENSE • Plays fully offline • No account, no sign-in, no cloud • No in-app purchases of any kind • Arabic and English, with full right-to-left support Ads pay for it. The rewarded one is always your choice, never the price of a level.