Daily Math Brain Puzzles : QED

About this app

QED brings you a fresh math riddle every single day. Every puzzle is solver verified to have exactly one correct answer, so you never waste time on unfair or ambiguous questions. Read the pattern, find the one hidden rule, and prove it. Whether you have two minutes or twenty, QED is the calm, ad free number game that turns daily brain training into a habit you actually enjoy. WHY YOU WILL LOVE QED - One new riddle every day, the same for everyone, with a spoiler free result you can share - Every puzzle has exactly one provable answer, verified before it ships - A campaign of 500 puzzles across ten themed worlds, free to play - Build a daily streak and watch a full year of progress fill your personal heat map - Earn ranks as your skill grows, from your first grade all the way up - A built in AI tutor that reads your attempts and coaches you toward the answer, without giving it away - A clean, distraction free design with a warm light theme and a true dark mode HOW IT WORKS - Each riddle shows a few lines of numbers that all follow one hidden rule - Enter the answer for the final line using the custom on screen keypad - Stuck? A free nudge points you in the right direction, with optional deeper hints if you want them - Solve it to keep your streak alive and open the next challenge LEARN, DO NOT JUST GUESS - The AI tutor explains why an answer works, so you build real pattern recognition - Optional lessons go deeper into the math idea behind each family of puzzles - Difficulty adapts to your level, so every puzzle lands in the sweet spot between too easy and too hard MADE WITH RESPECT FOR YOU - No ads, ever. No banners, no pop ups, no interruptions - Privacy first. No account, no sign up, and no tracking. Your progress stays on your device - Plays offline. Solve anywhere, anytime, with no connection needed - Built with real care for quality, from the typography to the smallest detail Perfect for commuters, students, teachers, and anyone who loves numbers, logic, riddles, sudoku, and brain teasers. Make QED your daily thinking ritual and prove it, one puzzle at a time. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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1. First observed Aug 8, 2026 · 5:34 PM $1.99