Smudjo

The infinite canvas

In short. A painting has no size: paint anywhere, and it grows to fit. Two fingers move, zoom and turn the canvas; a two-finger tap undoes, a three-finger tap redoes. Fit Painting, Actual Pixels and Flip View are in the Actions menu, the wrench at the top left.

No edges

A new painting starts as an open canvas with no size. Move past what you’ve painted and keep going: the painting grows with you, and you choose nothing until you export, which takes everything painted. However far it grows, zooming and painting stay smooth.

On iPhone and iPad:

  • Move: drag with two fingers.
  • Zoom: pinch.
  • Turn: twist two fingers.

On a Mac, scroll on the trackpad to move, pinch to zoom and twist to turn; ⌘ and the scroll wheel zoom too, and a two-finger double tap fits the painting.

The view’s commands

On iPad, the canvas turned slightly, with the Actions menu open at the top left: the import and time-lapse items, then Fit Painting, Actual Pixels (100%), Flip View and Brush Size Follows Zoom, then Symmetry and Paint with a Finger.
The Actions menu, with the view's commands in the middle.

In the Actions menu (the wrench at the top left):

  • Fit Painting shows the whole painting.
  • Actual Pixels (100%) shows one pixel of the painting for each pixel of the screen.
  • Flip View mirrors the view left to right, to see the painting with fresh eyes. The painting itself doesn’t change; choose it again to flip back.

Hide the tools

Tap with four fingers to hide the tools and see only the painting, and again to bring them back. On a Mac, press Tab.

Undo and redo

Tap with two fingers to undo, with three to redo, or use the arrows under the sliders (in the bottom bar on iPhone). On a Mac, ⌘Z and ⇧⌘Z.

Smudjo keeps 400 steps of undo on iPhone and iPad, and 1,000 on a Mac. Every step is also kept in the painting’s history, which the time-lapse plays back.

Updated 7 November 2026, for Smudjo 1.1.1.