# Ug Calc vs Fox RT Guide

The clearest difference is update cadence: Fox RT Guide at every 6 weeks against Ug Calc's every 79 months. Ug Calc's advantage is iOS requirement (11.0 vs 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.

Ug Calc ships an update every 79 months, Fox RT Guide every 6 weeks. The most recent releases landed on October 3, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Ug Calc | Fox RT Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ug-calc/id436130906/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 79 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 0 MB | 3 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lance Henderson](https://appshunter.io/developer/348247919) | [Mind Fox Software Solutions Private Limited](https://appshunter.io/developer/1891994531) |

## What reviewers say

### Ug Calc

[App page](https://appshunter.io/ios/app/ug-calc/id436130906)

This utility calculates geometric unsharpness for industrial radiographers. Input distances and source size to get an instant Ug value, eliminating manual formula lookups and calculations.

**Highlights:** Geometric Unsharpness (Ug) calculation, Input source-to-film distance, Input source-to-object distance, Input source size (diagonal), Eliminates manual formula lookup

**Features:** macOS Compatibility

**In-app purchases:** none


### Fox RT Guide

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Ug Calc free?

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

### Is Fox RT Guide free?

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

### Do Ug Calc or Fox RT Guide have ads?

Neither Ug Calc nor Fox RT Guide shows ads.

### Which is updated more often, Ug Calc or Fox RT Guide?

Ug Calc ships an update every 79 months, and Fox RT Guide every 6 weeks. Most recently, Ug Calc was updated on October 3, 2026 and Fox RT Guide on September 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*