Tintaur app for iPhone and iPad

Features:
- two panes: one for 3D object navigation, the other for drawing
- an innovative concept of two-hand drawing, when movements in navigation and drawing panes are combined into one shape-producing motion
- a multicomponent paint: color, roughness, and metallic (added via In-App Purchase).
- three drawable shapes: circle, line, and arc
- 2x-4x repeater (extensible up to 9x via In-App Purchase) and vertical mirror tools
- adjust ambient and omni lighting
- export a rendered 3D bulb as PNG image with transparent background
- export textures for later use in 3D editing software