# TTP Tools vs NDT X

The clearest difference is rating: NDT X at 5.0 against TTP Tools's 4.0. TTP Tools's advantage is iOS requirement (6.0 vs 13.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

NDT X holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

## The numbers

| Metric | TTP Tools | NDT X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/ttp-tools/id947857456/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ndt-x-ray-toolbox/id1291387260/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Monetization | Free | Free |
| Size | 18 MB | 83 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Marine Publications International Limited](https://appshunter.io/developer/486858357) | [Visiconsult X-ray Systems & Solutions GmbH](https://appshunter.io/developer/1291387259) |

## What reviewers say

### TTP Tools

[App page](https://appshunter.io/ios/app/ttp-tools/id947857456)

A collection of free utilities and information for the coatings industry. It offers calculators for conversions, spread rates, film thickness, and surface area, along with diagrams and guides for surface preparation.

**Highlights:** Metric/Imperial Conversions, Spread Rates Calculator, Film Thickness Calculator, Surface Area Calculations, Coating Breakdown Diagrams, Abrasive Information, Pre-surface Preparation Guide

**Features:** macOS Compatibility

**In-app purchases:** none


### NDT X

[App page](https://appshunter.io/ios/app/ndt-x-ray-toolbox/id1291387260)

This app provides essential tools for x-ray calculations, including geometric and CT calculations, image viewing, and quality control. It offers explanations for formulas and supports common detectors for easier use.

**Highlights:** TIFF and DICONDE image viewer, Geometric calculations, X-ray standards support, Image quality control, CT calculations, Formula explanations, Detector selection tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TTP Tools free?

TTP Tools is free to download, with no in-app purchases.

### Is NDT X free?

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

### Which has better reviews, TTP Tools or NDT X?

NDT X is rated higher. TTP Tools averages 4.0 out of 5 from 2 ratings, while NDT X averages 5.0 from 3 ratings.

### Do TTP Tools or NDT X have ads?

Neither TTP Tools nor NDT X shows ads.

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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.*