# Statistical Process Control

> Statistical tool for quality control using control charts and process capability analysis. (iPhone/iPad app by Fernando Haro Martinez.)

- Source: https://appshunter.io/ios/app/statistical-process-control/id1061413089 (this page in markdown: same URL + `.md`)
- Developer: [Fernando Haro Martinez](https://appshunter.io/developer/854401235)
- Category: Productivity
- Price: Free with in-app purchases
- Rating: 1.00/5 from 2 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 2 MB
- Languages: English, Spanish
- Released: 2015-12-04
- Data updated: 2026-07-18
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/statistical-process-control/id1061413089/reviews.md

## What is Statistical Process Control?

Statistical Process Control is a statistical tool of Statistical Quality Control. Control Charts aid the Six Sigma professional in the process of determining if a process is under control.

All you need to do is to enter numbers separated by spaces and see the results immediately.

List of features:

- X-Bar Chart
- Range (R) Chart
- Process Capability, Cp, Cpk 
- Theory and examples.

## Key features

- X-Bar Chart
- Range (R) Chart
- Process Capability (Cp, Cpk)
- Theory and examples
- Instant data analysis

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Ability to Save | $1.99 | one-time |
| Ability to export Graphs and Data | $1.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/statistical-process-control/id1061413089/reviews.md

### 1/5 — Great GUI, poor execution

*2026-01-02*

Exactly what I was looking for; but charting capability doesn’t work . Screen goes dark. Is someone working on a fix?

### 1/5 — Crashes

*2025-02-23*

I tried this three or four times and the app closed automatically each time without running

## Frequently asked questions about Statistical Process Control

### What is Statistical Process Control used for?

Statistical Process Control is a tool used in Statistical Quality Control to help professionals determine if a process is under control using control charts.

### How do I input data into Statistical Process Control?

You can input numerical data by entering numbers separated by spaces directly into the application for immediate analysis.

### What types of charts does Statistical Process Control offer?

The app provides X-Bar Charts and Range (R) Charts, which are fundamental for monitoring process variation.

### Does Statistical Process Control calculate process capability?

Yes, the application calculates process capability metrics such as Cp and Cpk, essential for assessing process performance.

### What devices is Statistical Process Control available on?

Statistical Process Control is supported on iPhone, iPad, and iPod devices.

### What is the age rating for Statistical Process Control?

The app has an age rating of 4+, making it suitable for a wide range of users.

### When was Statistical Process Control last updated?

The latest version, 1.2, was released on January 15, 2016, indicating it has not been updated recently.

### Does Statistical Process Control have ads?

No, the application does not contain advertisements.

## Version history (last 3 releases)

### 1.2 — 2016-01-15

This app has been updated by Apple to display the Apple Watch app icon.

New Icon Name, SPC from Statistical Quality Control

### 1.1 — 2015-12-19

Spanish Translation

### 1.0 — 2015-12-04

No release notes.

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## More apps by Fernando Haro Martinez

- [Descriptive Statistics](https://appshunter.io/ios/app/descriptive-statistics/id854401232)
- [Photo Reports](https://appshunter.io/ios/app/photo-reports/id1087718461)
- [1937](https://appshunter.io/ios/app/1937/id6449098440)

All apps by Fernando Haro Martinez: https://appshunter.io/developer/854401235

## Related topics

[statistical process control](https://appshunter.io/ios/topics/statistical-process-control) · [ppro quality control 2](https://appshunter.io/ios/topics/ppro-quality-control-2) · [cpf spc](https://appshunter.io/ios/topics/cpf-spc)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-18.*