Spirograph Maker vs Brain Training AHA

Create mesmerizing geometric art with a single tap. Released in 2017 with over 110,000 downloads — a math-meets-art tool refined over 9 years. Spirograph Maker turns the timeless mechanical drawing toy into a digital playground for your iPhone and iPad. Choose your gears, pick your colors, and watch hypnotic patterns bloom across the screen — no drawing skill required. WHERE MATH MEETS ART The patterns Spirograph creates aren't accidents — they're governed by GCD/LCM and parametric equations. Watch how the lobe count is determined by n/gcd(n,m), see hypotrochoids and epitrochoids come alive on your screen. A visual companion for middle-school number theory and high-school parametric curves. Whether you're a curious learner, a math enthusiast, or just love beautiful patterns, this is where math becomes mesmerizing. In 2022, this app was acknowledged in an academic paper on algebraic combinatorics — the smoothness criteria for Positroid varieties (Billey & Weaver, arXiv:2207.06508). From a child's toy to cutting-edge mathematical research — that's how deep these patterns go. FOUR GEAR SHAPES Not just circles. Draw with ellipse, rounded triangle (a curve of constant width), and teardrop gears too. Change the gear's shape and the symmetry of the pattern changes with it: circles stay regular, ellipses stretch, triangles beat in threes, teardrops curve organically. A strength slider tunes each shape continuously — from nearly circular to sharply pointed. KEY FEATURES - Auto-draw mode: tap once and beautiful patterns appear on their own - Custom color palette with gradient mode for endless combinations - Adjustable gear shapes and sizes: circle / ellipse / rounded triangle / teardrop, plus tooth count - Save your creations directly to your Photo Library - Share to Instagram, Facebook, or anywhere - Full iPad support — a bigger canvas for finer detail - Light and Dark mode WHY SPIROGRAPH MAKER - A meditative break from a busy day — without leaving your phone - A visual bridge between middle-school math and university geometry - Inspired by the classic Spirograph toy, reimagined for modern iOS - Perfect for parents, students, artists, and math enthusiasts - Works offline, anywhere PERFECT FOR - Winding down before bed - Sparking creativity with kids - A short math meditation anytime - Making one-of-a-kind wallpapers - Sharing unique art on Instagram - A short, calm focus break during your day In Japan, downloads notably spike around the start of new school terms and summer breaks — pointing to a growing use as a learning companion. Pull out your phone, tap once, and watch sacred geometry unfold. Whether you're a designer, a doodler, a student, or just love beautiful patterns, Spirograph Maker is the simplest way to make art that mesmerizes. Free to download. Optional ad-free upgrade available.

Stimulate Your Brain with ‘Aha!’ Moments! A Puzzle Game That Challenges You to Spot Gradual Changes in Images The exhilarating “Aha!” moment will have you hooked! A new kind of “spot the difference” brain-training puzzle game that stimulates your vision and brain! Experience the “Aha!” moment—where parts of an image gradually change—right in the palm of your hand. At first glance, they look like ordinary photos or illustrations… but something is slowly changing somewhere!? Sharpen your focus and spot the moment the change happens! ◆ Game Features The Satisfying “Aha!” Experience The exhilaration you feel the moment you notice the change after staring intently at the screen is unbeatable! It’s perfect for brain activation (brain training). A wealth of levels for everyone from beginners to experts Features a wide variety of challenges, including beautiful landscapes, cute illustrations, and scenes from everyday life! Quick play during spare moments Each level takes just a few dozen seconds to complete, making it perfect for commuting, on the way to school, or as a quick break to clear your head! ◆ Recommended for: ・Those who enjoy brain training, quizzes, and puzzle games ・Those who want to experience the thrill of an “Aha!” moment ・Those who want to improve their concentration and observational skills ・Those who are good at or enjoy spot-the-difference games ・Those looking for a free, casual game to pass the time So, can your brain spot the differences? Download now and enjoy the ultimate “Aha!” experience!