Gear Drawing: Spiral Art

Spiral art with virtual gears. Pick a ring, a wheel and a pen hole, then watch the wheel roll round the ring and draw looping patterns.

Gear Drawing works like the classic gear drawing toy, on your phone. Stack curves in different colours to build detailed spiral art, then save a sharp picture to your gallery.

Features
- Watch the gears roll as each layer draws itself
- Change the ring, wheel and pen hole and see the pattern change
- Roll inside or outside the ring for different shapes
- Two layers free, each with its own colour, line and turn
- Solid and Glow ink in the Brass palette
- Surprise me for instant new patterns
- Undo any change
- Save 2048 px pictures to your gallery and share them
- Saved drawings stay editable
- Works offline, no account

Pro
A one-time Pro unlock adds:
- Up to 12 layers in one drawing
- Copper, Neon, Pastel and Mint palettes, plus any colour you like
- Gradient and Wobble ink
- Five more background colours
- 4096 px saves, with a see-through background option

Pricing
Free: two layers, the Brass palette and 2048 px saves. Gear Drawing Pro is a one-time lifetime unlock. No subscription.

Recent changes:
Fixes the Pro unlock store connection.