Drilling Engineering vs Workover Assistant
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.
Workover Assistant
This utility app assists oil and gas field personnel with essential calculations for well workovers. It provides tools for hydrostatic pressure, internal capacity, and other critical functions, serving as a convenient resource for rig site or office use.
- Hydrostatic pressure calculations
- Internal capacity calculations
- Oil and gas well workover tools
- Rig site and office utility
- Accurate field calculations
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Workover Assistant is designed to help field personnel perform quick, accurate calculations related to oil and gas well workovers. It includes tools for hydrostatic pressure, internal capacity, and other common workover functions—making it a handy companion for the rig site or office.
Screenshots
Verdict
The clearest difference is rating: Workover Assistant at 5.0 against Drilling Engineering's 3.8. Drilling Engineering's advantage is ratings volume (19 vs 2) and iOS requirement (7.0 vs 16.6). 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.
Workover Assistant holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Drilling Engineering has 19 ratings behind it against 2, so its average is the more settled of the two.
Drilling Engineering ships an update every 42 months, Workover Assistant every 58 months. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.
| Parameter | Drilling Engineering | Workover Assistant |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (19 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 19 — better | 2 |
| Update frequency | Every 42 months — better | Every 58 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 7.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 8 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | PT. Pertamina (Persero) | Kelly Gayneaux |
Customer experience
Drilling Engineering
Workover Assistant
In-app purchases
Drilling Engineering
No in-app purchases
Workover Assistant
No in-app purchases
Questions
Is Drilling Engineering free?
Is Workover Assistant free?
Which has better reviews, Drilling Engineering or Workover Assistant?
Do Drilling Engineering or Workover Assistant have ads?
Which is updated more often, Drilling Engineering or Workover Assistant?
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