Comparison

MUDSheet vs Gas Compressibility Factor Z

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read 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

About

Gas Compressibility Factor Z

Features
Read 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

MUDSheet3 screens
Gas Compressibility Factor Z4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard2 real differences · 7 level
MUDSheet versus Gas Compressibility Factor Z: the parameters behind the verdict, then further details
ParameterMUDSheetGas Compressibility Factor Z
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 months — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better13.0
Further details — not scored
Size18 MB3 MB
Age rating17+4+
DeveloperPegasus Vertex, Inc.Carlos Moura

In-app purchases

None

MUDSheet

No in-app purchases

None

Gas Compressibility Factor Z

No in-app purchases

Questions

Is MUDSheet free?
MUDSheet is free to download, with no in-app purchases.
Is Gas Compressibility Factor Z free?
Gas Compressibility Factor Z is free to download, with no in-app purchases.
Do MUDSheet or Gas Compressibility Factor Z have ads?
Neither MUDSheet nor Gas Compressibility Factor Z shows ads.
Which is updated more often, MUDSheet or Gas Compressibility Factor Z?
MUDSheet ships an update every 2 months, and Gas Compressibility Factor Z every 8 months. Most recently, MUDSheet was updated on September 29, 2026 and Gas Compressibility Factor Z on October 7, 2026.

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