# Halliburton eRedBook® Mobile vs Mud Engineer

The clearest difference is price: Halliburton eRedBook® Mobile at Free against Mud Engineer's $2.99. Halliburton eRedBook® Mobile also leads on rating (3.7 vs 1.0) and ratings volume (30 vs 1). Mud Engineer's advantage is review sentiment (100% vs 67%) and chart position (#17 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

Halliburton eRedBook® Mobile is free to download; Mud Engineer costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Halliburton eRedBook® Mobile holds the better App Store score, 3.7 against 1.0. That said, the two scores are not equally well evidenced: Halliburton eRedBook® Mobile has 30 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 67% of Halliburton eRedBook® Mobile's written reviews are positive against 100% of Mud Engineer's, so the app with the better star average is not the one people write more warmly about.

Halliburton eRedBook® Mobile ships an update every 25 months, Mud Engineer every 34 months. The most recent releases landed on July 20, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Halliburton eRedBook® Mobile | Mud Engineer |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[3.7 (30 ratings)](https://appshunter.io/ios/app/halliburton-eredbook-mobile/id507496941/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/mud-engineer/id992941305/reviews) |
| Number of ratings | **30** | 1 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 25 months** | Every 34 months |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#17** |
| Size | 44 MB | 31 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Halliburton](https://appshunter.io/developer/401718908) | [bader alshammari](https://appshunter.io/developer/858126240) |

## What reviewers say

### Halliburton eRedBook® Mobile

[App page](https://appshunter.io/ios/app/halliburton-eredbook-mobile/id507496941)

This app provides essential data and calculators for oil and gas well calculations. Access key dimensions, strengths, and specifications for tubulars to quickly determine volumes and capacities. Supports multiple unit systems for flexible calculations.

**Highlights:** Instant access to pipe dimensions and strengths, Quickly calculate capacity and annulus volumes, View volume measurements in Metric or Imperial units, Calculate total volumes in various units, Calculate volume per depth, Copy results with a single click

**Features:** macOS Compatibility

**In-app purchases:** none


### Mud Engineer

[App page](https://appshunter.io/ios/app/mud-engineer/id992941305)

**Currently charting:** #17 Top Paid · Business (US App Store)

This app provides essential drilling calculations for mud engineers. It helps determine final mud weight, volume adjustments, and the number of sacks needed for various drilling scenarios.

**Highlights:** Final Mud Weight calculation, Volume calculations, Sack calculations, lb/bbl calculation, Weight Up calculation

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

**In-app purchases:** none


## Frequently asked questions

### Is Halliburton eRedBook® Mobile free?

Halliburton eRedBook® Mobile is free to download, with no in-app purchases.

### Is Mud Engineer free?

Mud Engineer costs $2.99, with no in-app purchases.

### Which has better reviews, Halliburton eRedBook® Mobile or Mud Engineer?

Halliburton eRedBook® Mobile is rated higher. Halliburton eRedBook® Mobile averages 3.7 out of 5 from 30 ratings, while Mud Engineer averages 1.0 from 1 ratings.

### Do Halliburton eRedBook® Mobile or Mud Engineer have ads?

Neither Halliburton eRedBook® Mobile nor Mud Engineer shows ads.

### Which is updated more often, Halliburton eRedBook® Mobile or Mud Engineer?

Halliburton eRedBook® Mobile ships an update every 25 months, and Mud Engineer every 34 months. Most recently, Halliburton eRedBook® Mobile was updated on July 20, 2026 and Mud Engineer on September 17, 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.*