SPC Tools
Quality Engineering Toolkit
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
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/
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
• Redesigned subscription screen with clearer pricing
• Fixed decimal input for Turkish locale
• Improved Turkish localization throughout the app
• Minor UI improvements and bug fixes
The developer, Osman Seven, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Osman Seven
- Size
- 11.1 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Monthly Pro USD 3.99
- Yearly Pro USD 22.99
- Copyright
- © 2026 Osman Seven