Spiro Designs vs Spirograph Drawing

Spiro Designs draws the patterns a small circle makes as it rolls around the inside of a large one. Stamp circles or polygons at every step, or let a single point leave a spirograph trail, then play with size, spacing, colour and blend mode until something beautiful appears. WHAT YOU CAN DO • Pick a shape: circles, a line, triangles, squares, all the way up to decagons, or a classic spirograph curve • Pinch the drawing to change size, drag sideways to change spacing, drag up and down for line weight • Choose fill, outline or both, with 23 named colours or random colours on every change • Combine overlapping colours with 20 blend modes, from Difference and Exclusion to Screen and Multiply • Even-odd fill turns overlapping shapes into lace and checkerboard patterns • Start from twelve curated presets, or roll a random design with one tap • Animate the design being drawn, and tap for a clean full-screen view • Undo and redo every change • Keep up to 50 named designs and reopen, update or rename them • Share as a high-resolution PNG, save to Photos, or export an SVG vector file for design apps, plotters and cutters No account, no ads, no tracking. Your designs stay on your device.

Create mesmerizing spirograph patterns with full control over four parameters: • Inner Circle Radius – size of the fixed inner circle • Outer Circle Radius – size of the rolling outer circle • Pen Distance – distance of the virtual pen from the center of the outer circle • Drawing Amount – how much of the roulette to draw (0–100%) • All patterns are automatically centered on the canvas for optimal display. Perfect for designers, illustrators, educators, or anyone who loves math-inspired art. Patterns are based on the mathematical concept of a Hypotrochoid, allowing endless creative possibilities. Features: • Adjustable colors and parameters for infinite variations • Interactive real-time drawing • High-quality SVG export for scalable vector graphics • Intuitive sliders for precise control • Ideal for digital art, educational purposes, or personal projects Unleash your creativity and explore the beauty of math-inspired designs today!