# GD&T pro

> GD&T reference app for learning ISO 1101 geometric dimensioning and tolerancing. (iPhone/iPad app by Carl Zeiss AG.)

- Source: https://appshunter.io/ios/app/gd-and-t-pro/id976631549 (this page in markdown: same URL + `.md`)
- Developer: [Carl Zeiss AG](https://appshunter.io/developer/488066215)
- Category: Education
- Price: $9.99
- Rating: 2.70/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 102 MB
- Languages: American English
- Released: 2015-03-30
- Data updated: 2026-09-01
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/gd-and-t-pro/id976631549/reviews.md

## What is GD&T pro?

Learn, interpret and inspect GD&T according to ISO 1101. This app describes a large range of definitions of geometric dimensioning and tolerancing and supports engineers and employees as a multimedia reference book. As part of operative education, this app shows relationships and makes it easier to understand the right handling of form and position tolerances in practice.
This app explains the most important definitions of GD&T and its interpretation by examples (straightness, roundness, flatness, cylindricity, profile of a line, parallelism, squareness, angularity, position, concentricity, symmetry, circular runout, …)
-52 animations
-Basic information
-Form tolerance
-Profile tolerance
-Position tolerance
-Orientation tolerance
-Runout tolerance

## Key features

- Learn GD&T according to ISO 1101
- Multimedia reference book
- Explains definitions with examples
- Covers form and position tolerances
- Includes 52 animations
- Basic information and advanced tolerances

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/gd-and-t-pro/id976631549/reviews.md

### 1/5 — I want my money back!

*2015-11-20*

This app is very expensive for the content it offers. I purchased the app confident in the company's reputation of good CMM machines, they are terrible creating this kind of applications. I want my money back. Don't buy it, there are better apps that do better a job explaining gd&t for free.

## Frequently asked questions about GD&T pro

### What is GD&T pro?

GD&T pro is an educational app that serves as a multimedia reference for learning and interpreting geometric dimensioning and tolerancing (GD&T) according to ISO 1101 standards. It explains key definitions with examples and includes animations to aid understanding.

### How much does GD&T pro cost?

GD&T pro is a paid application, priced at $9.99. This one-time purchase grants access to all its features and content.

### What learning methodology does GD&T pro use?

GD&T pro employs a multimedia reference book approach, explaining definitions of geometric dimensioning and tolerancing through text and 52 animations. It focuses on practical examples to illustrate the handling of form and position tolerances.

### How does GD&T pro track progress?

The provided information does not specify a progress tracking feature within GD&T pro. It is designed as a reference and learning tool for understanding GD&T concepts.

### Does GD&T pro offer certifications?

GD&T pro is an educational resource for learning GD&T but does not appear to offer formal certifications upon completion of its content.

### What devices is GD&T pro available on?

GD&T pro is supported on iPhone and iPod devices. It is designed for iOS mobile platforms.

### How often is GD&T pro updated?

The latest version of GD&T pro was released on February 22, 2022. Updates are not frequent, with the last update being over a year ago.

### Does GD&T pro have ads?

No, GD&T pro does not contain advertisements. As a paid application, it offers an ad-free learning experience.

## Version history (last 5 releases)

### 3.0.1 — 2022-02-22

- Added sizes and modifiers
- Added datum and tolerance direction limitations
- Added tolerance indications for associations and filters
- Added additional drawing entries
- Minor bug-fixes

### 2.0.8 — 2019-10-30

- Brandnew App-Design
- Reworked Content and Videos
- Updated Standards Directory
- Minor Bugfixes

### 2.0.5 — 2018-09-25

Added new content and fixed some minor bugs.

### 2.0.3 — 2017-02-01

Minor bug fixes and a new ebook link

### 2.0.1 — 2015-10-15

Minor Improvements

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All apps by Carl Zeiss AG: https://appshunter.io/developer/488066215

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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 2026-09-01.*