# SPC Tools: Cpk Calculator

> Control Charts, AQL & OEE

Canonical page: [https://chrome-stats.com/d/id6759008455](https://chrome-stats.com/d/id6759008455)

## Overview

- **ID:** `id6759008455`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Osman Seven
- **Category:** Productivity
- **Version:** 1.2.1
- **Last updated:** 2026-07-12
- **First published:** 2026-02-21
- **Size:** 11 MB
- **Data as of:** 2026-09-03
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/spc-tools-cpk-calculator/id6759008455)
- **Website:** [https://saevaexe.github.io/spctools/](https://saevaexe.github.io/spctools/)
- **Privacy policy:** [https://saevaexe.github.io/spctools/privacy.html](https://saevaexe.github.io/spctools/privacy.html)

## Description

Run Cp/Cpk, control charts, AQL, OEE, Gage R&R and Six Sigma calculations offline. Built for quality engineers and manufacturing teams.

Run SPC, Cp/Cpk, control chart, AQL, OEE and Six Sigma calculations without spreadsheets. SPC Tools gives quality engineers a fast offline toolkit for manufacturing decisions on the shop floor.

Built for quality engineers, manufacturing teams, Six Sigma practitioners, inspectors and students, SPC Tools brings the most common quality calculations into one clean iPhone and iPad app.

PROCESS CAPABILITY
- Cp / Cpk process capability calculator
- Pp / Ppk process performance calculator
- Clear capability interpretation

CONTROL CHARTS
- X-bar R control charts
- I-MR individual moving range charts
- UCL, CL and LCL results
- Out-of-control point detection

MEASUREMENT & INSPECTION
- Gage R&R / MSA calculator
- AQL sampling plans based on ISO 2859-1
- Sample size calculator

MANUFACTURING PERFORMANCE
- OEE calculator
- Availability, performance and quality breakdown
- Sigma level, DPMO and yield conversion

QUALITY TOOLS
- Pareto analysis
- Histogram analysis
- FMEA with RPN priority
- Ishikawa fishbone diagram
- Hypothesis testing
- Alpha, beta and power analysis

WORK FASTER
- Save calculation history
- Review previous results
- Use the built-in formula reference
- Works offline
- No account required
- Data is processed on device

FREE & PRO
SPC Tools includes 5 free calculators. SPC Tools Pro unlocks all 15 calculators with a 7-day free trial.

Download SPC Tools and replace scattered spreadsheets with a practical quality engineering calculator built for daily manufacturing work.

Payment will be charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless canceled at least 24 hours before the end of the current period. You can manage and cancel your subscriptions in your App Store account settings.

Privacy Policy: https://saevaexe.github.io/spctools/privacy.html
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Rankings

- #1,143,925 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6759008455)