# NDT X vs Time Converter

The clearest difference is price: NDT X at Free against Time Converter's $1.99. NDT X also leads on update cadence (every 2 weeks vs every 59 months). On rating, ratings volume, ads and in-app purchases there is nothing between them.

NDT X is free to download; Time Converter costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for NDT X against 4.9 for Time Converter. Both are backed by a comparable volume of ratings — 3 and 7 respectively.

NDT X ships an update every 2 weeks, Time Converter every 59 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | NDT X | Time Converter |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/ndt-x-ray-toolbox/id1291387260/reviews)** | [4.9 (7 ratings)](https://appshunter.io/ios/app/time-converter/id1537558234/reviews) |
| Number of ratings | 3 | **7** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 59 months |
| Monetization | **Free** | Paid |
| Size | 83 MB | 0 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Visiconsult X-ray Systems & Solutions GmbH](https://appshunter.io/developer/1291387259) | [Anna Filobok](https://appshunter.io/developer/1613515832) |

## What reviewers say

### 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


### Time Converter

[App page](https://appshunter.io/ios/app/time-converter/id1537558234)

Easily convert between various units of time, including seconds, minutes, hours, days, weeks, and months. This tool is designed for quick and convenient time calculations for a wide range of users.

**Highlights:** Convert seconds, Convert minutes, Convert hours, Convert days, Convert weeks, Convert months

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NDT X free?

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

### Is Time Converter free?

Time Converter costs $1.99, with no in-app purchases.

### Which has better reviews, NDT X or Time Converter?

NDT X is rated higher. NDT X averages 5.0 out of 5 from 3 ratings, while Time Converter averages 4.9 from 7 ratings.

### Do NDT X or Time Converter have ads?

Neither NDT X nor Time Converter shows ads.

### Which is updated more often, NDT X or Time Converter?

NDT X ships an update every 2 weeks, and Time Converter every 59 months. Most recently, NDT X was updated on November 3, 2026 and Time Converter on November 3, 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.*