# Fox RT Guide vs NDT Field Calc

The clearest difference is iOS requirement: NDT Field Calc at 15.0 against Fox RT Guide's 18.6. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | Fox RT Guide | NDT Field Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Size | 3 MB | 4 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mind Fox Software Solutions Private Limited](https://appshunter.io/developer/1891994531) | [Marcus Cook](https://appshunter.io/developer/1883186571) |

## What reviewers say

### Fox RT Guide

[App page](https://appshunter.io/ios/app/fox-rt-guide/id6761904066)

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

**In-app purchases:** none


### NDT Field Calc

[App page](https://appshunter.io/ios/app/ndt-field-calc/id6808320392)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fox RT Guide free?

Fox RT Guide is free to download, with no in-app purchases.

### Is NDT Field Calc free?

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

### Do Fox RT Guide or NDT Field Calc have ads?

Neither Fox RT Guide nor NDT Field Calc 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.*