# Density vs Fox RT Guide

The clearest difference is update cadence: Fox RT Guide at every 6 weeks against Density's every 75 months. Density's advantage is iOS requirement (8.0 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.

Density ships an update every 75 months, Fox RT Guide every 6 weeks. The most recent releases landed on September 28, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Density | Fox RT Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (8 ratings)](https://appshunter.io/ios/app/density/id458423388/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 75 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 0 MB | 3 MB |
| Requires iOS | **8.0** | 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

### Density

[App page](https://appshunter.io/ios/app/density/id458423388)

This app calculates radiographic density variations for industrial radiographers and inspectors. It is designed to assist professionals working with ASME Section V standards in their density calculations.

**Highlights:** Radiographic density calculation, ASME Section V compliance, Industrial radiographer tool, Density variation calculations, Inspector utility

**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 Density free?

Density 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 Density or Fox RT Guide have ads?

Neither Density nor Fox RT Guide shows ads.

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

Density ships an update every 75 months, and Fox RT Guide every 6 weeks. Most recently, Density was updated on September 28, 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.*