Your picture, on your paper.
Your picture sits see-through over the live camera. Look at the screen and follow the lines on the paper underneath.
- Pick: Choose a photo, take a new one, or start from a template.
- Choose a look: Original, Grayscale or Outline. Crop if you like, then tap Trace.
- Trace: Prop up your phone over the paper. Pinch it into place and follow the lines.
- See-through overlay: The picture floats over the camera view of your page.
- Pinch, rotate, drag: Size it and place it with two fingers.
- Flashlight: Lights up the paper when the room is dim.
- Lock: Freezes the picture so a bump won’t move it.
- Opacity: Fade the picture to see your own lines come through.
No camera? No problem.
Sketch mode shows your picture full-screen on bright white. Lay a sheet of paper on the glass and trace.
- Pick: Choose a photo or a template, then tap Sketch instead of Trace.
- Go bright: Sketch mode fills the screen with your picture at full brightness.
- Lay paper and trace: Put a thin sheet on the glass and lock the screen so a stray touch can’t move anything. The lines show through.
- No camera needed: Works with the camera switched off.
- Max brightness: The screen turns all the way up so lines show through.
- Paper on top: Thin printer paper works best.
- Lock the screen: Taps through the paper won’t move anything.
Make it easier to follow.
Turn a busy photo into clean lines, then set it up the way you like.
- Opacity: Set how see-through the picture is, from 0% to 100%.
- Outline filter: Turns a photo into simple lines to trace.
- Crop: Trim the picture to the part you want.
- Flip: Mirror the picture left to right.
Something to draw, any time.
Start from a built-in sketch when you’re not sure what to draw. Everything you trace waits in Recents.
- Starter templates: Simple line drawings, ready to trace.
- Recents: Your last pictures, kept on this phone.
- Quick re-open: Pick up where you left off in one tap.
Your drawings stay yours.
Underdraw works with no internet and no account. It asks for two things, and only when you need them.
- Works offline: Trace on a plane, in a cabin, anywhere.
- No account: Open it and start drawing.
- No tracking, no ads: No analytics, no advertising IDs, nothing sold or shared.
- Camera: Shows your paper under the picture. Never recorded or sent.
- Photos: Only the pictures you pick. They stay on your phone.
