# Directional Survey Methods vs Mud Man Pro

The clearest difference is update cadence: Mud Man Pro at every 4 months against Directional Survey Methods's every 50 months. Directional Survey Methods's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

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

Directional Survey Methods ships an update every 50 months, Mud Man Pro every 4 months. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Directional Survey Methods | Mud Man Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mud-man-pro/id6765783852/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 50 months | **Every 4 months** |
| Monetization | — | Free |
| Size | 7 MB | 3 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Carlos Moura](https://appshunter.io/developer/407501202) | [Colten Meadows](https://appshunter.io/developer/1896073318) |

## What reviewers say

### Directional Survey Methods

[App page](https://appshunter.io/ios/app/directional-survey-methods/id1130800392)

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

**In-app purchases:** none


### Mud Man Pro

[App page](https://appshunter.io/ios/app/mud-man-pro/id6765783852)

This offline drilling fluid calculator provides essential tools for mud engineers on the rig. It offers over 20 specialized calculators for various fluid properties and operations, along with a comprehensive field notes library. Designed for speed and accuracy without internet dependency.

**Highlights:** 20+ drilling fluid calculators, OBM and WBM support, Offline functionality, Field notes library, Pilot test converter, Hitch calendar

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

**In-app purchases:** none


## Frequently asked questions

### Is Directional Survey Methods free?

Directional Survey Methods is free to download, with no in-app purchases.

### Is Mud Man Pro free?

Mud Man Pro is free to download, with no in-app purchases.

### Do Directional Survey Methods or Mud Man Pro have ads?

Neither Directional Survey Methods nor Mud Man Pro shows ads.

### Which is updated more often, Directional Survey Methods or Mud Man Pro?

Directional Survey Methods ships an update every 50 months, and Mud Man Pro every 4 months. Most recently, Directional Survey Methods was updated on October 1, 2026 and Mud Man Pro on October 11, 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.*