# Fitz's Atlas vs PetrofacGo

The clearest difference is price: PetrofacGo at Free against Fitz's Atlas's $69.99. PetrofacGo also leads on update cadence (every 2 months vs every 7 months). Fitz's Atlas's advantage is iOS requirement (11.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

PetrofacGo is free to download; Fitz's Atlas costs $69.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Fitz's Atlas ships an update every 7 months, PetrofacGo every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Fitz's Atlas | PetrofacGo |
| --- | --- | --- |
| Price | $69.99 | **Free** |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/fitzs-atlas/id486858354/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | Paid | — |
| Size | 29 MB | 99 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Marine Publications International Limited](https://appshunter.io/developer/486858357) | [CB&I Asset Solutions Limited](https://appshunter.io/developer/1881537071) |

## What reviewers say

### Fitz's Atlas

[App page](https://appshunter.io/ios/app/fitzs-atlas/id486858354)

This interactive app helps users identify, understand the causes, and learn prevention and repair methods for coatings and application defects. It features a microscopy section for failure identification and live animations of defect development. Access is restricted to students of the Corrodere Academy.

**Highlights:** Identify coatings and application defects, Understand causes, prevention, and repair, Microscopy section for failure identification, Live animations of defect development, Multilingual support (English, French, Spanish, Chinese)

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

**In-app purchases:** none


### PetrofacGo

[App page](https://appshunter.io/ios/app/petrofacgo/id1501828450)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Fitz's Atlas free?

Fitz's Atlas costs $69.99, with no in-app purchases.

### Is PetrofacGo free?

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

### Do Fitz's Atlas or PetrofacGo have ads?

Neither Fitz's Atlas nor PetrofacGo shows ads.

### Which is updated more often, Fitz's Atlas or PetrofacGo?

Fitz's Atlas ships an update every 7 months, and PetrofacGo every 2 months. Most recently, Fitz's Atlas was updated on November 1, 2026 and PetrofacGo 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.*