# AQL

> Calculates sample size and allowable defects for product inspections using ANSI Z1.4-2003. (iPhone/iPad app by Pro Q.C. International Limited.)

- Source: https://appshunter.io/ios/app/aql/id608818916 (this page in markdown: same URL + `.md`)
- Developer: [Pro Q.C. International Limited](https://appshunter.io/developer/599909091)
- Category: Utilities
- Price: Free
- Rating: 3.30/5 from 3 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 1 MB
- Languages: American English
- Released: 2013-03-15
- Data updated: 2026-06-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/aql/id608818916/reviews.md

## What is AQL?

The Pro QC AQL (Acceptance Quality Limit) calculator (based on based upon ANSI Z1.4-2003) makes it easy to determine a sample size and the proper number of allowable rejects in a particular shipping lot size.

It is a fundamental tool for preparing a sampling plan for a random product inspection as it allows to set the number of samples to inspect, and the maximum numbers of defects that is allowed.

This free application takes the place of the traditional paper card that many inspectors in the field use.

## Key features

- Determine sample size
- Calculate allowable rejects
- Based on ANSI Z1.4-2003
- Prepare sampling plans
- Digital replacement for paper cards

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/aql/id608818916/reviews.md

### 1/5 — The app is always crashing

*2018-01-16*

App is always crashing

### 4/5 — Handy

*2017-05-08*

Wish you could choose inspection levels other than those in the standard charts.

### 1/5 — Broke

*2013-09-02*

It doesn't work.

### 5/5 — Quick n easy

*2013-07-01*

Quick and easy if you know what your doing.

## Frequently asked questions about AQL

### What is AQL used for?

AQL is used to determine the appropriate sample size and the maximum number of defects allowed for a given lot size during product inspections, based on the ANSI Z1.4-2003 standard.

### Is AQL free to use?

Yes, AQL is a free application, meaning there is no cost to download or use its core functionalities for calculating acceptance quality limits.

### What devices does AQL support?

AQL is supported on iPhone, iPad, and iPod devices, making it accessible for users within the Apple ecosystem.

### How often is AQL updated?

The latest version of AQL is 1.3, which was last updated on April 12, 2017. Users should check for potential future updates for any new features or bug fixes.

### What is the age rating for AQL?

AQL has an age rating of 4+, indicating it is suitable for users of all ages and does not contain content inappropriate for children.

### Does AQL have ads?

No, AQL does not contain advertisements. As a free utility, it provides its services without the interruption of ads.

### What standard does AQL follow?

AQL is based upon the ANSI Z1.4-2003 standard, a widely recognized guideline for attribute sampling and inspection procedures in quality control.

### Can AQL replace traditional inspection cards?

Yes, AQL is designed to replace traditional paper cards used by inspectors in the field, offering a digital and convenient way to manage sampling plans and defect tracking.

## Version history (last 4 releases)

### 1.3 — 2017-04-12

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

Support for iOS 10 added

### 1.2 — 2014-11-02

Add new standard mode.

### 1.1 — 2013-04-02

Fix the Sample size, old version is show the Shipping lot size.

### 1.0 — 2013-03-15

No release notes.

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## More apps by Pro Q.C. International Limited

- [Pro QC GPS Timeclock](https://appshunter.io/ios/app/pro-qc-gps-timeclock/id854363978)
- [My Pro QC](https://appshunter.io/ios/app/my-pro-qc/id1490217400)

All apps by Pro Q.C. International Limited: https://appshunter.io/developer/599909091

## Related topics

[apqc](https://appshunter.io/ios/topics/apqc) · [aqpc](https://appshunter.io/ios/topics/aqpc) · [aqstar](https://appshunter.io/ios/topics/aqstar)

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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 2026-06-05.*