SPC Tools

SPC Tools is a focused toolkit for quality engineering and manufacturing teams. Run the most common SPC and quality calculations in seconds, keep results organized, and make fast decisions on the shop floor.

FEATURES

Process Capability & Performance

• Cp / Cpk process capability index
• Pp / Ppk process performance index
• OEE (Overall Equipment Effectiveness)

Control Charts & Analysis

• X-bar R control charts with UCL/LCL
• I-MR (Individual Moving Range) charts
• Out-of-control point detection

Measurement & Sampling

• Gage R&R (Measurement System Analysis)
• AQL sampling plans (ISO 2859-1)
• Sample size calculator

Quality Tools

• Pareto analysis with 80/20 rule
• Histogram with frequency distribution
• FMEA (RPN calculation)
• Ishikawa fishbone diagram

Statistics

• Sigma level & DPMO conversion
• Hypothesis testing (Z-test, t-test)
• Type I/II error & power analysis

MORE

• Calculation history with save & review
• Formula reference library
• Works offline - no internet required
• iPhone & iPad optimized

SUBSCRIPTION SPC Tools Pro unlocks all 15 calculators. 5 calculators are free forever.

• Monthly: $2.99/month
• Yearly: $19.99/year (save 44%)
• 7-day free trial included

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/