Drilling Engineering vs Dr. DE
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.
Dr. DE
This mobile toolbox simplifies complex drilling engineering calculations. It offers a comprehensive suite of 29 functions across 11 categories, eliminating the need for handbooks and improving efficiency for engineers and technicians.
- 29 drilling engineering functions
- 11 functional groups
- Bit hydraulics calculations
- Hole cleaning analysis
- Well control solutions
- Unit conversion tools
- Tank capacity calculations
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Do you want to solve drilling engineering problems in seconds? It is easier than ever before to use Dr. DE Lite mobile app, a must-have toolbox app that includes a substantial collection of functions for every drilling engineer and technician. Bid farewell to flipping through handbooks, textbooks, standards, etc. for answers. This free app, sophisticated yet simple to use, not only saves time and money, but also makes your engineering and sales efforts more reliable and professional. The Dr. DE Lite app is equipped with 29 functions that are divided into 11 groups. --Bit Hydraulics --Casing Centralizer --Hole Cleaning --Hydraulics --Mud Additives --Pipe --Pump --Tank Capacity --Volume and Capacity --Well Control --Unit Conversion
Screenshots
Verdict
The clearest difference is rating: Dr. DE at 4.5 against Drilling Engineering's 3.8. Dr. DE also leads on update cadence (every 3 months vs every 42 months). Drilling Engineering's advantage is iOS requirement (7.0 vs 15.6). On price, review sentiment, ratings volume and ads 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.
Dr. DE holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 19 and 16 respectively. Written reviews point the same way: 50% of Drilling Engineering's written reviews are positive against 56% of Dr. DE's.
Drilling Engineering ships an update every 42 months, Dr. DE every 3 months. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.
| Parameter | Drilling Engineering | Dr. DE |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (19 ratings) | 4.5 (16 ratings) — better |
| Positive reviews | 50.0% of reviews | 55.6% of reviews — better |
| Number of ratings | 19 — better | 16 |
| Update frequency | Every 42 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 7.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 8 MB | 33 MB |
| Age rating | 4+ | 17+ |
| Developer | PT. Pertamina (Persero) | Pegasus Vertex, Inc. |
Customer experience
Drilling Engineering
Dr. DE
In-app purchases
Drilling Engineering
No in-app purchases
Dr. DE
No in-app purchases
Questions
Is Drilling Engineering free?
Is Dr. DE free?
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