Math Game vs Rondo

Spark the motivation to learn. Enjoy learning. Get good at math without even noticing. Math Game is a 60-second arithmetic game. Tap an operation and the round starts: three lives, questions that get harder as you go, no menus, no settings. Children think they are clearing levels and collecting buddies. Every round is mental-math practice. 【60 seconds is exactly as long as a child is willing to give】 • Before homework, before bed, while waiting for the bus • Points for every correct answer, double for streaks, and a last-10-seconds alarm that makes you push for one more • The results screen lists every miss with the correct answer, so a mistake is learned once 【15 animal buddies grow stronger with you】 • Cat, dog, bunny, bear and panda are there from day one; penguin, fox, koala, frog, lamb and more unlock through total correct answers, streaks and world rank • Each buddy has 12 stickers that light up the more rounds you play together; at the end of a round your buddy cheers or roots for you • Your Math Card tracks total correct answers and climbs from Rookie to Rare, Epic, Legend and Mythic 【A small goal every day, rewards for streaks】 • One small goal on the home screen: play a few rounds, get a number correct, or try your weakest operation. The goal is always just a little more than usual • Streak days 2, 3, 7, 14, 30 and 100 bring stickers, buddies and badges • The weekly board resets every Monday and adds up every round you play, so playing more always counts; the high-score board keeps your single best round against the whole world 【Why math gets better while you play: the research behind the design】 • Retrieval practice (the testing effect): actively recalling an answer builds memory far better than re-reading (Roediger & Karpicke, 2006, Psychological Science). Every question is a retrieval. • Spaced practice: many short sessions beat one long one for long-term retention (Cepeda et al., 2006, Psychological Bulletin meta-analysis). One 60-second round, a little every day. • Arithmetic fluency: speed and fluency of basic fact retrieval predict later mathematics achievement (Geary, 2011, Developmental Psychology); timed practice with immediate feedback is an effective way to build it (Codding, Burns & Lukito, 2011 meta-analysis). • Immediate feedback: feedback is among the strongest influences on learning (Hattie & Timperley, 2007, Review of Educational Research). Right or wrong shows instantly, and every miss is reviewed with its correct answer. • Games and motivation: game elements have a moderate positive effect on learning outcomes (Bai, Hew & Huang, 2020, Educational Research Review meta-analysis). Buddies, stickers and streaks handle "one more round"; the questions handle "getting fluent". • Difficulty that grows with you: questions level up automatically so the challenge stays right where it is doable but takes a little effort. 【Parents can relax】 • No login, no account: open and play; the game remembers the device • No ads, no in-app purchases, no chat • Photo avatars are visible only to you; others on the leaderboard see a built-in animal icon. Every row can be reported or blocked • Made for grades 1–6, and for anyone who wants faster mental math One round a day, until your child says "one more".

Rondo turns the counting numbers into a quiet, hypnotic dance. Every number from 1 upward is drawn as a factorization diagram: nested rings of colored dots that show, at a glance, how that number is built from its prime factors. 6 is two groups of three. 12 is three groups of four. Primes can't be split, so they shimmer alone. Then the diagram melts and re-forms into the next number, and the next, an endless looping dance of arithmetic. It's equal parts math toy, teaching tool, and ambient art. WATCH, OR EXPLORE • Let it play for a calm, continuous dance from one number to the next • Tap to pause, drag to scrub to any number, or step one at a time • Speed it up, or slow it right down • A gentle haptic tap each time the dance lands on a prime • Follow any number down its Collatz orbit, and watch it fall back to 1 HEAR IT • Every number sings its factorization: a prime is a single pure tone, a composite a chord of its prime factors • On by default, off whenever you like POINT YOUR CAMERA • Aim Rondo at any printed number and watch its diagram bloom over the page, in augmented reality • Lift a number's diagram off the page and into the room, then walk around it • Street signs, receipts, book pages: factor the world around you EVERY NUMBER HAS A STORY • Tap any number to see what makes it special: whether it's prime, a perfect number, a power, and more • Collect the special numbers you find in the Field Guide SEE THE MATH • The current number and its factorization, always in view • Full VoiceOver support and a spoken read-out of each number and how it factors • Save the numbers you love to Favorites, and share any diagram as an image ON YOUR HOME SCREEN AND WRIST • Widgets that turn today's date into factorization diagrams, across the Home Screen, Lock Screen, and StandBy • A factorization calendar for the month or the current week • A widget for a number you pin, and a stepper widget you tap to walk one number at a time • An Apple Watch app: scrub through the numbers with the Digital Crown, with the same prime haptics • Ask Siri for a number, or add Rondo to a Shortcut • An optional nudge on days whose number is itself worth a look MAKE IT YOURS WITH RONDO PRO A one-time unlock, never a subscription. The full dance stays free. Pro is for going deeper: • New color palettes, backgrounds, and color styles • Layout options for how the rings nest and order themselves • A living clock face that factors the time • Number sequences: count by multiples, primes only, Fibonacci, and more • The full instrument: tune the scale, voice, and space of the sound • Hear any number's story narrated aloud, in your choice of tone CALM BY DESIGN No ads. No tracking. No account. No subscription. Rondo is free to play, with an optional one-time Pro unlock. A LOVING HOMAGE Rondo is a faithful tribute to Brent Yorgey's factorization diagrams and Stephen Von Worley's animated "Factor Conga," built natively for iPhone, iPad, and Apple Watch. The diagrams honor their work; the sound, the augmented reality, and the stories are Rondo's own. Full credits are in the app.