CpK Support

Process Capability made clear

Contact

Have a question, found a bug, or want to request a feature? Reach out and I'll get back to you as soon as I can.

Email Support

About the App

CpK (Process Capability) helps you calculate Cp, Cpk, Pp, and Ppk, and understand control charts and SPC rules — built to be genuinely informational, not just a black-box number.

Enter data by typing, speaking, scanning a photo, or capturing a live reading, then get clear results with plain-language explanations designed for anyone from a rookie engineer to an experienced quality professional.

Frequently Asked Questions

What iOS version do I need?

CpK requires iOS 16 or later.

Why did my scanned numbers come out wrong?

Photo and handwriting recognition work best with printed or clearly written numbers, good lighting, and no digital zoom. For handwritten data, always double-check the recognized values before calculating.

Is my data stored anywhere?

No data is collected or transmitted. Everything you enter stays on your device — see the Privacy Policy for details.

How do I request a feature or report a bug?

Email support using the button above — include your device model and iOS version if you're reporting an issue.