calc ICC is now available

Today I am launching calc ICC, a professional ICC color conversion calculator for iPhone and iPad.

It puts serious color calculations in your hand, using the same Little CMS color engine that has powered production software for more than 20 years.

Launch offer: calc ICC is available at a reduced price through October 15, 2026.

Color calculations wherever you need them

calc ICC is designed for color professionals, prepress operators, designers, photographers, profile authors, and developers who need a reliable answer without returning to a desktop workstation.

You can use input, output, proofing, DeviceLink, and named color ICC profiles. The app handles RGB, CMYK, Lab, and multichannel color spaces, including expanded color gamut workflows with up to 15 channels.

With calc ICC you can:

• Convert colors using standard rendering intents and black point compensation
• Soft proof colors and perform gamut checks
• Work with named colors and DeviceLink profiles
• Convert CMYK to CMYK while preserving the ink formula for the same Lab color
• Enter and compare numerical values quickly on a mobile device

Built for professional work

This is a focused tool for answering color questions quickly and accurately. It is not intended to replace a complete prepress workstation. Instead, it makes the calculations you often need available in a convenient mobile form.

Your profiles and color values stay on your device. calc ICC collects no personal information, usage data, diagnostics, or identifiers. It has no advertising and does not track you across apps or websites.

calc ICC is a one-time purchase, with no subscription or recurring charge.

Thank you to the beta testers

The public beta brought valuable reports from real color workflows, including unusual profiles, multichannel data, DeviceLinks, proofing, and gamut checks. Thank you to everyone who tested the app and helped prepare this release.

Visit the calc ICC product page for the complete feature overview, manual, videos, and App Store link.