Match any color in a photo to your real colored pencils. Here's the quick version:

1. Choose your brands. Tap Select your brands and check the pencils you own. You can add more anytime.
2. Add a photo. Tap Upload and pick a reference picture.
3. Pick a color. On a computer, click a spot in the photo. On iPhone/iPad, drag the photo so the color sits under the center crosshair.
4. See your matches. The closest pencils in each brand appear, ranked with a match percentage.
5. Fine-tune a pencil. Tap a match to open calibration, then nudge R/G/B, brightness, or vividness until the swatch matches the real pencil in your hand.
6. Save it. Tap Save pencil. Your change sticks, so future matches are more accurate.
7. Copy to another device. Use Share my settings to send your tuning to your iPad or iPhone in a tap.

Look for the small i icons around the app for quick tips on the trickier bits.