# WellCalc vs Mud Man Pro

The clearest difference is in-app purchases: Mud Man Pro at none against WellCalc's 2. Mud Man Pro also leads on iOS requirement (16.0 vs 18.0). WellCalc's advantage is update cadence (weekly vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. WellCalc sells 2 in-app purchases, starting at $4.99 per month. Mud Man Pro asks for nothing beyond the download.

WellCalc ships an update weekly, Mud Man Pro every 4 months. The most recent releases landed on September 14, 2026 and August 26, 2026 respectively.

## The numbers

| Metric | WellCalc | 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 months |
| Monetization | — | Free |
| Size | 13 MB | 3 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ryan Tinklepaugh](https://appshunter.io/developer/1883444651) | [Colten Meadows](https://appshunter.io/developer/1896073318) |

## What reviewers say

### WellCalc

[App page](https://appshunter.io/ios/app/wellcalc/id6761081416)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WellCalc Pro Monthly | $4.99 | per month |
| WellCalc Pro Yearly | $29.99 | per year |


### 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 WellCalc free?

WellCalc is free to download, with in-app purchases available.

### Is Mud Man Pro free?

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

### Do WellCalc or Mud Man Pro have ads?

Neither WellCalc nor Mud Man Pro shows ads.

### Which is updated more often, WellCalc or Mud Man Pro?

WellCalc ships an update weekly, and Mud Man Pro every 4 months. Most recently, WellCalc was updated on September 14, 2026 and Mud Man Pro on August 26, 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.*