MUDSheet vs Gas Compressibility Factor Z
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MUDSheet
This app provides essential calculations and data for mud engineering. It distills critical information from various engineering resources into a convenient tool for mud and drilling engineers, offering quick access to equations and chemical formulas.
- Essential mud engineering calculations
- Quick access to drilling equations
- Chemical formulas and atomic table
- Unit conversion and setup exchange
- Input data validation
- Multiple table references
Read full descriptionHide full description
MUDSheet covers the most essential calculation and data in mud engineering. Designed for mud engineers and drilling engineers, MUDSheet is an app that contains 23 most commonly used calculations, ranging from pipe capacity, pump output to mud additives. We, engineers, are often overwhelmed by the information scattered around in various media forms. Now, the most essential information from engineering handbooks, SPE textbooks, IADC manuals, has been distilled into MUDSheet, a must-have application for every mud engineer and technician to get the job done accurately and efficiently. Features: • Engineering calculation in a second • Quick access to drilling equations and chemical formulas • Being convenient for unit setup exchange • Replaces paper charts and tables • Input data validation • Samples for demonstration • Optional function display and flexible order change • Multiple table references on mud capacity, volume, and properties Functions: • Pipe Capacity • Annular Capacity • Pipe & Annular Volume • Pump-Duplex • Pump-Triplex • Pump-Quadruple • Rectangular Tank Volume • Mesh • Nozzle Total Flow Area • Annular Velocity • CaCl2 • NaCl • Brine Density • Brine Viscosity • Specific Gravity • PV/YP in Water-Based Mud • Solids in Water-Based Mud • Mud Weight Adjustment • Temperature • Chemical Formula • Atomic Table • Unit Conversion
Gas Compressibility Factor Z
Read full descriptionHide full description
This app is a tool very useful for complex calculations of the gas compressibility factor Z for natural gases used in the Gas Law: PV = nRTZ. Formulas by Hall and Yarborough (1973) correlation to estimate z-factor of natural gas. Standing and Katz’s Chart to Z-Factor vs Reduced Pressure and Reduced Temperature was plotted by app using formulas by Hall and Yarborough (1973). Check for oil & gas applications in our portfolio on the App Store. Please visite our website for links at www.wellcontrol.com.br Please, you can contribute for improvements. Report bugs and suggestions to contact@wellcontrol.com.br DISCLAIMER: These tools & materials are provided 'as is' without warranties of any kind, express or implied. Please verify the tools provided by this application by yourself before you use them. Ensure you understand the impact of using these tools. Any use you choose to make of these tools & materials is undertaken by you entirely at you own risk.
Screenshots
Verdict
The clearest difference is update cadence: MUDSheet at every 2 months against Gas Compressibility Factor Z's every 8 months. MUDSheet also leads on iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
MUDSheet ships an update every 2 months, Gas Compressibility Factor Z every 8 months. The most recent releases landed on September 29, 2026 and October 7, 2026 respectively.
| Parameter | MUDSheet | Gas Compressibility Factor Z |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 18 MB | 3 MB |
| Age rating | 17+ | 4+ |
| Developer | Pegasus Vertex, Inc. | Carlos Moura |
In-app purchases
MUDSheet
No in-app purchases
Gas Compressibility Factor Z
No in-app purchases
Questions
Is MUDSheet free?
Is Gas Compressibility Factor Z free?
Do MUDSheet or Gas Compressibility Factor Z have ads?
Which is updated more often, MUDSheet or Gas Compressibility Factor Z?
Other comparisons















