Spirograph Maker vs Harmonograph

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.

◆ One-of-a-kind geometric art, drawn by a pendulum Harmonograph recreates a classic 19th-century drawing machine: two swinging pendulums whose overlapping motion traces a glowing line that slowly spirals toward the center of the screen. Every drawing starts with slightly different parameters, so the same pattern never appears twice. What you see being drawn is truly one of a kind. ◆ Discover, collect, and decorate DISCOVER - A new pattern is drawn before your eyes every time you start - Watch the glowing pen tip as each line is born - Tap "Again" to meet the next one-of-a-kind pattern - Pause anytime to enjoy the moment COLLECT - Save your favorites to the gallery with a name of your choice - Patterns are classified into 4 types (petal, star, spiral, loop) with a rarity from 1 to 5 stars - 20 combinations in total: can you discover them all? DECORATE - Export saved patterns as iPhone-sized wallpapers (1290 x 2796) - Choose from 5 background themes: navy, jet black, deep green, wine, and ink purple - Composed to stay clear of the clock and icons on your lock screen ◆ Designed for quiet moments - Works fully offline (network is used only to show ads) - No account required, no personal information collected - Your saved recipes stay on your device only Harmonograph is free, supported by a small banner ad and an occasional full-screen ad when saving wallpapers. Sit back and enjoy the trail of light drawn by the pendulum.