# NDT Master: UT Calculator — Ultrasonic Testing, NDE Tool

> Ultrasonic Testing, NDE Tool (iPhone/iPad app by 雪 蔺.)

- Source: https://appshunter.io/ios/app/ndt-master-ut-calculator/id6762549446 (this page in markdown: same URL + `.md`)
- Developer: [雪 蔺](https://appshunter.io/developer/1853712836)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15 · 19 MB
- Languages: French (France), Afrikaans, German (Germany), American English, Arabic, Catalan, Chinese (Simplified, China), Chinese (Traditional, Taiwan), Korean, Croatian and 25 more
- Released: 2026-04-22
- Data updated: 2026-08-18
- User reviews in markdown: https://appshunter.io/ios/app/ndt-master-ut-calculator/id6762549446/reviews.md

## What is NDT Master?

NDT Master is built for field ultrasonic testing workflows. It brings AWS D-Rating, DAC/TCG curve building, 3D beam simulation, OCR parameter capture, and practical UT calculators into one offline-first app.

Core field workflows
- AWS D-Rating in 5 Seconds: Fast weld indication workflow for field UT
- Build DAC/TCG Curves Fast: Plot reference echoes and gain table instantly
- Scan Readings. Auto-Fill Parameters.: OCR maps velocity, MHz and dB in seconds
- Locate Flaws Faster: Instant depth and projection outputs
- Critical Angles at a Glance: Snell + beam spread for setup confidence
- Beam Spread You Can Trust: Visualize setup impact before inspection starts

Tools included
- 9 UT calculators: Wavelength, Near Field, Beam Spread, Flaw Location, Snell's Law, ToFD PCS, dB Calc, Acoustic Impedance, Resonance.
- Material presets for steel, aluminum, stainless steel, and common inspection setup.
- Code-aware workflows for weld inspection decisions, with AWS and ASME terminology kept visible.

Offline and private
- Built for Real Field Work: Local data, no account, offline-first workflow

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Professional Unlock | $9.99 | one-time |



## Version history (last 5 releases)

### 1.4 — 2026-06-24

- Optimized the OCR algorithm.

### 1.3 — 2026-05-19

- Added App Store optimized screenshots for iPhone and iPad.
- Improved ASO copy for offline privacy and field workflow clarity.
- Refined onboarding messaging for UT inspectors.

### 1.2 — 2026-05-11

- Added App Store optimized screenshots for iPhone and iPad.
- Improved ASO copy for offline privacy and field workflow clarity.
- Refined onboarding messaging for UT inspectors.

### 1.1 — 2026-05-06

Verbesserte Interaktionen

### 1.0 — 2026-04-22

No release notes.

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| --- | --- | --- | --- |
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| [Ultimate NDT Pocketbook](https://appshunter.io/ios/app/ultimate-ndt-pocketbook/id6759848851) | 5.0 (5) | Free | Productivity |
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| [物件管理好幫手](https://appshunter.io/ios/app/id6744175002) | — | $0.99 | Productivity |
| [NDT Work Log](https://appshunter.io/ios/app/ndt-work-log/id1440628096) | 3.5 (6) | Free | Productivity |

## More apps by 雪 蔺

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All apps by 雪 蔺: https://appshunter.io/developer/1853712836

## Related topics

[ndt calculator](https://appshunter.io/ios/topics/ndt-calculator)

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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 2026-08-18.*