LightPad: Tracing Light Box

Turn your iPad or iPhone into a tracing light box: true-to-size cm/inch grids, warm-to-cool light, and a touch lock so resting paper never presses a button.

Lay a source sheet and a blank sheet on the display: a bright, evenly lit surface shines through both, and you trace on real paper with confidence.

Built for how tracing actually works:

LIGHT YOU CAN TUNE

• A light surface that never sleeps or dims on its own mid-trace
• Color temperature from 2700 K (warm) to 6500 K (daylight), rendered from real black-body values — warm light keeps thin pencil lines readable
• Brightness from a soft low glow up to your display’s true peak — on HDR displays the slider goes beyond regular screen white
• Dimming happens in the light surface itself, never by pushing the panel low — no added flicker in the dark range

TRUE-TO-SIZE GRIDS

• Metric 1 cm grid, or imperial 1-inch grid with 1/4-inch subdivisions
• Physically accurate on every supported iPhone and iPad — 1 cm on screen is 1 cm on paper
• Center crosshair for squaring up your sheets
• Pure black lines with adjustable line width, so grids stay visible through paper

MADE FOR PAPER ON GLASS

• Touch lock: one tap locks the screen so resting palms and paper press nothing; hold to unlock
• Controls fade away and return with a tap — while you work, it is all light
• Works in any orientation and window size

PRIVATE BY DESIGN

• No account, no ads, no tracking, no analytics
• Requests zero permissions and never connects to the network
• Works completely offline

For illustrators inking and refining sketches, animators flipping between drawings, calligraphy and lettering practice, embroidery and quilting pattern transfer, and anyone who traces on real paper.