# Sneaker Authenticator vs NDT Master

The clearest difference is rating: Sneaker Authenticator at 4.8 against NDT Master's 3.0. Sneaker Authenticator also leads on in-app purchases (none vs 1) and ratings volume (6 vs 2). NDT Master's advantage is update cadence (every 2 weeks vs every 5 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. NDT Master sells 1 one-off in-app purchase. Sneaker Authenticator asks for nothing beyond the download.

Sneaker Authenticator holds the better App Store score, 4.8 against 3.0. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

Sneaker Authenticator ships an update every 5 months, NDT Master every 2 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | Sneaker Authenticator | NDT Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/sneaker-authenticator/id6761025383/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/ndt-master-ut-weld-calculator/id6762549446/reviews) |
| Number of ratings | **6** | 2 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 20 MB |
| Requires iOS | 17 | **15** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kawaii](https://appshunter.io/developer/1696001381) | [雪 蔺](https://appshunter.io/developer/1853712836) |

## What reviewers say

### Sneaker Authenticator

[App page](https://appshunter.io/ios/app/sneaker-authenticator/id6761025383)

Utilize AI to analyze sneaker photos, examining materials, stitching, logos, and construction for informed decisions. Browse community checks, save your analyses, and get care tips for your footwear.

**Highlights:** AI-powered photo analysis, Detailed breakdown of materials and construction, Confidence indicators, Community feed of shared checks, Personalized vault for saved analyses, Sneaker care tips

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### NDT Master

[App page](https://appshunter.io/ios/app/ndt-master-ut-weld-calculator/id6762549446)

This app streamlines ultrasonic testing for field inspections. It offers rapid weld rating, DAC/TCG curve building, 3D beam simulation, and OCR parameter capture. Includes essential UT calculators and material presets for efficient flaw detection and setup confidence.

**Highlights:** AWS D-Rating in 5 Seconds, DAC/TCG Curve Building, 3D Beam Simulation, OCR Parameter Capture, 9 UT Calculators, Offline-First Workflow

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

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


## Frequently asked questions

### Is Sneaker Authenticator free?

Sneaker Authenticator is free to download, with no in-app purchases.

### Is NDT Master free?

NDT Master is free to download, with in-app purchases available.

### Which has better reviews, Sneaker Authenticator or NDT Master?

Sneaker Authenticator is rated higher. Sneaker Authenticator averages 4.8 out of 5 from 6 ratings, while NDT Master averages 3.0 from 2 ratings.

### Do Sneaker Authenticator or NDT Master have ads?

Neither Sneaker Authenticator nor NDT Master shows ads.

### Which is updated more often, Sneaker Authenticator or NDT Master?

Sneaker Authenticator ships an update every 5 months, and NDT Master every 2 weeks. Most recently, Sneaker Authenticator was updated on October 31, 2026 and NDT Master on October 31, 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.*