# NDT Reference

> Reference app for NDT mathematics, formulae, and constants. (iPhone/iPad app by The British Institute of Non-Destructive Testing.)

- Source: https://appshunter.io/ios/app/ndt-reference/id577761888 (this page in markdown: same URL + `.md`)
- Developer: [The British Institute of Non-Destructive Testing](https://appshunter.io/developer/554280129)
- Category: Reference, Business
- Price: Free
- Rating: 2.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 7 MB
- Languages: American English
- Released: 2013-01-17
- Data updated: 2026-06-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/ndt-reference/id577761888/reviews.md

## What is NDT Reference?

The British Institute of Non-Destructive Testing's NDT Reference App is based on the Institute's best-selling book: 'Mathematics and Formulae in NDT', edited by the late Dr Ron Halmshaw. 

Prepared by members of the BINDT Technical Committee, this app is planned to help NDT practitioners and students to understand and use the formulae which are employed in NDT. It contains basic useful formulae used in radiography and radiology, ultrasonics, magnetic particle testing and eddy current testing. The ultrasonics section includes some values for ultrasonic velocities for a number of materials.

Additional images by storyset on Freepik (https://www.freepik.com)

## Key features

- NDT mathematics and formulae
- Radiography and radiology formulas
- Ultrasonics formulas and velocities
- Magnetic particle testing formulas
- Eddy current testing formulas
- Reference for NDT practitioners and students

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/ndt-reference/id577761888/reviews.md

### 2/5 — Very limited usefulness

*2016-05-07*

The method table does not allow one to select any of the pull down choices. The only useable part of this app is the formulas pages. However there are other NDT apps that will perform common NDT calculations if you fill in the dimensions of your materials. This app needs work.

### 5/5 — Brilliantly Handy

*2013-04-01*

Useful for SNT and PCN technicians alike. Seems less buggy than the other free NDT reference apps. Thanks BINDT.

## Frequently asked questions about NDT Reference

### What is NDT Reference?

NDT Reference is a mobile application that provides essential mathematical formulas and constants used in various non-destructive testing (NDT) methods. It is based on the book 'Mathematics and Formulae in NDT'.

### What NDT methods does NDT Reference cover?

NDT Reference covers formulas for radiography and radiology, ultrasonics (including material velocities), magnetic particle testing, and eddy current testing.

### Who is NDT Reference for?

This app is designed for NDT practitioners and students who need to understand and use the formulae employed in non-destructive testing.

### Is NDT Reference free to use?

Yes, NDT Reference is available for free. It does not feature in-app purchases or advertisements.

### What devices support NDT Reference?

NDT Reference is supported on Mac, iPhone, iPad, and iPod devices.

### How often is NDT Reference updated?

The app was last updated on September 27, 2024, with version 2024.09, indicating regular maintenance and updates.

### What is the age rating for NDT Reference?

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

### What do users think of NDT Reference?

Based on the available data, NDT Reference has a rating of 2.0 stars from 1 rating, suggesting a mixed or negative user reception.

## Version history (last 5 releases)

### 2024.09 — 2024-09-27

Minor improvements to keep the app running smoothly

### 2024.01 — 2024-01-31

- The app has been refreshed with a new layout on iPad and is now available on macOS devices too
- Additional Method Selectors have been added
- Original Method Selector has been updated and expanded to match the 2024 Yearbook content
- Added new onboarding wizard to clarify privacy options
- Added new App Settings screen to allow customisation of privacy settings
- Added screen to enable easy access to the Privacy Policy
- Improvements when running in Dark mode
- Improved support for dynamic text size

### 2.0.2 — 2020-08-29

- Small update with bug fixes and improvements

### 2.0.1 — 2019-12-14

- Added support for dark mode
 - Some minor bug fixes

### 2.0 — 2017-12-22

- Minor bug fixes
- Improved iPhone X compatibility

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## More apps by The British Institute of Non-Destructive Testing

- [NDT News](https://appshunter.io/ios/app/ndt-news/id554280046)
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- [NDT Events](https://appshunter.io/ios/app/ndt-events/id1129755816)

All apps by The British Institute of Non-Destructive Testing: https://appshunter.io/developer/554280129

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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.*