Comparison

Directional Survey Methods vs MUDSheet

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

Head to head
About

Directional Survey Methods

Features
Read full description

This application uses the formulas to calculate the survey parameters (diff of TVD, N/S, E/W, DLS) between two stations of the methods: 1. Tangential 2. Balanced Tangential 3. Minimum Curvature 4. Radius of Curvature 5. Angle Averaging Also available the formulas of the methods. This app was developed based in existing spreadsheets. There is no comparison with any other software. You can contribute with suggestions for improvements, reporting bugs and spreading it to your friends. Our portfolio for Directional Drilling available on the App Store: - "Directional Drilling" a complete app (building and plotting) with well planning, survey, multi-lateral, etc. - There are also stand-alone applications for Well Planning, Well Survey and Multi-Lateral Wells. - "3D Interpolation" to calculate a survey data between two stations. 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 your own risk. Thanks

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

Screenshots

Directional Survey Methods4 screens
MUDSheet3 screens

Verdict

The call

The clearest difference is update cadence: MUDSheet at every 2 months against Directional Survey Methods's every 50 months. MUDSheet also leads on iOS requirement (9.0 vs 12.0). 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

Directional Survey Methods ships an update every 50 months, MUDSheet every 2 months. The most recent releases landed on September 15, 2026 and September 10, 2026 respectively.

Scorecard2 real differences · 7 level
Directional Survey Methods versus MUDSheet: the parameters behind the verdict, then further details
ParameterDirectional Survey MethodsMUDSheet
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 50 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.09.0 — better
Further details — not scored
Size7 MB18 MB
Age rating4+17+
DeveloperCarlos MouraPegasus Vertex, Inc.

In-app purchases

None

Directional Survey Methods

No in-app purchases

None

MUDSheet

No in-app purchases

Questions

Is Directional Survey Methods free?
Directional Survey Methods is free to download, with no in-app purchases.
Is MUDSheet free?
MUDSheet is free to download, with no in-app purchases.
Do Directional Survey Methods or MUDSheet have ads?
Neither Directional Survey Methods nor MUDSheet shows ads.
Which is updated more often, Directional Survey Methods or MUDSheet?
Directional Survey Methods ships an update every 50 months, and MUDSheet every 2 months. Most recently, Directional Survey Methods was updated on September 15, 2026 and MUDSheet on September 10, 2026.

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