Drilling Engineering vs Directional Survey Methods
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Drilling Engineering
This app provides essential tools for oil and gas professionals involved in drilling operations. It offers unit conversions, a comprehensive drilling calculator, API tubular data, stuck pipe problem identification, and well control calculations.
- Petroleum Unit Conversion
- Drilling Calculator (90+ calculations)
- API Tubular Data
- Stuck Pipe Problem Identification
- Well Control Kill Sheet
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"Drilling Engineering" mobile application is provided by Drilling UTC of Pertamina for anyone who works and or engaged in oil and gas activity, particularly in planning and drilling operations. "Drilling Engineering" mobile application include: 1. Petroleum Unit Conversion to convert the units are often used in drilling operations, including the Temperature, Pressure , Density , depth , and other parameters. 2. Drilling Calculator consists of approximately 90 base drilling calculations, both in drilling operations and design. 3. API Tubular Data provides tubular data base such as casing, tubing, and drill pipe, give a quick access to pipe dimension and strength. 4. Stuck Pipe Problem Identification is based on Texas Drilling Associates Stuck pipe logics. Analyze the cause of stuck pipe, could be occurred because of Pack-off/bridge, Wellbore Geometry and Differential Sticking. 5. Well Control Kill Sheet is an IADC based calculation to stop the flow of an influx from formation using wait and weight method.
Directional Survey Methods
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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
Screenshots
Verdict
The clearest difference is iOS requirement: Drilling Engineering at 7.0 against Directional Survey Methods's 12.0. On price, update cadence, ads and in-app purchases 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.
Drilling Engineering ships an update every 42 months, Directional Survey Methods every 50 months. The most recent releases landed on October 3, 2026 and October 1, 2026 respectively.
| Parameter | Drilling Engineering | Directional Survey Methods |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (19 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 42 months — better | Every 50 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 7.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 8 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | PT. Pertamina (Persero) | Carlos Moura |
In-app purchases
Drilling Engineering
No in-app purchases
Directional Survey Methods
No in-app purchases
Questions
Is Drilling Engineering free?
Is Directional Survey Methods free?
Do Drilling Engineering or Directional Survey Methods have ads?
Which is updated more often, Drilling Engineering or Directional Survey Methods?
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