# NDT Reference vs LEEA Connect

The clearest difference is review sentiment: NDT Reference at 50% against LEEA Connect's 0%. LEEA Connect's advantage is update cadence (every 4 months vs every 11 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

NDT Reference ships an update every 11 months, LEEA Connect every 4 months. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | NDT Reference | LEEA Connect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/ndt-reference/id577761888/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 7 MB | 29 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The British Institute of Non-Destructive Testing](https://appshunter.io/developer/554280129) | [LEEA](https://appshunter.io/developer/1500348180) |

## What reviewers say

### NDT Reference

[App page](https://appshunter.io/ios/app/ndt-reference/id577761888)

This app provides essential mathematical formulas and constants used in various non-destructive testing (NDT) methods. It's designed for NDT practitioners and students to easily access and understand the calculations involved in radiography, ultrasonics, magnetic particle testing, and eddy current testing.

**Highlights:** 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

**In-app purchases:** none


### LEEA Connect

[App page](https://appshunter.io/ios/app/leea-connect/id1500348181)

This app provides lifting equipment professionals with instant access to technical guidance, documentation, news, and safety alerts. It serves as a mobile resource for LEEA members and their employees, keeping them informed with the latest updates and a comprehensive library.

**Highlights:** Technical guidance access, Documentation library, Latest news feeds, Safety alerts, Information for members

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NDT Reference free?

NDT Reference is free to download, with no in-app purchases.

### Is LEEA Connect free?

LEEA Connect is free to download, with no in-app purchases.

### Do NDT Reference or LEEA Connect have ads?

Neither NDT Reference nor LEEA Connect shows ads.

### Which is updated more often, NDT Reference or LEEA Connect?

NDT Reference ships an update every 11 months, and LEEA Connect every 4 months. Most recently, NDT Reference was updated on October 6, 2026 and LEEA Connect on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*