Lightbox Trace 4+

Kolja Kähler

Designed for iPad

    • 3.9 • 12 Ratings
    • Free
    • Offers In-App Purchases

iPad Screenshots


Use your iPad as a lightbox for tracing! I have created this simple app to transfer digitally created sketches to drawing paper - it runs on any iPad including the first generation (iOS 5.1.1).

Import a picture from your saved photos, or paste an image from the clipboard. Scale, position, and rotate (90 degree increments - use the toolbar button) to your taste.

With an additional in-app purchase, you can use filters to enhance the image for easier tracing. You can test drive this feature a few times for free.

If all you need is a big white light (for tracing from another piece of paper), press the white square on the toolbar instead.

Hit the "lock" icon to set the screen to maximum brightness and pin the picture down - subsequent touch events are ignored. You can now place a sheet of paper onto the display and trace the image, without accidentally moving it around.

Note: You also should disable the 4- and 5-finger multitasking gestures in the general section of your device settings.

To re-enable the user interface, deactivate the app with the device's home button, then activate it again.

What’s New

Version 2.0

This app has been updated by Apple to display the Apple Watch app icon.

New filter panel for enhancing the image used for tracing: brightness, saturation, contrast, and threshold. This is an in-app purchase, but you can try it out for free.
Also added a help page and fixed a few UI glitches.

Ratings and Reviews

3.9 out of 5
12 Ratings

12 Ratings

Mmshshsh ,

Ideal Light Table Stand-In

Has a lock feature, brightness setting as well as touch controls. Great for artists on the go!

Wiser12 ,

Great backlight!

Used it for backlighting old 35 mm color slides to digitize them using a digital SLR camera. Just one question...does anyone know the color index rating (CRI, or Ra) value when the screen is turned on to brightest?

Elland74 ,


This app did exactly what I needed it to do. It threw a blank, lit screen under my original and watercolour paper so I could trace and outline.

App Privacy

The developer, Kolja Kähler, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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