Dr. DE vs Drilling Hydraulics 2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
Drilling Hydraulics 2
This tool assists oil and gas professionals with critical drilling hydraulics calculations. It helps optimize penetration rates and select appropriate bit nozzles for various well types, including onshore, offshore, vertical, and directional wells.
- Well planning for onshore/offshore, vertical/directional wells
- Drill string and bit nozzle calculations
- Volume, capacity, and hydrostatic calculations
- Surface equipment mud pump and connection data
- Directional well calculations (Type I and Horizontal)
- Imports data from other simulator apps
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The Drilling Hydraulics provides to driller, tool pushers, engineers, chemists, students and other professionals in the petroleum industry a productivity tool helpful in drilling of oil wells for hydraulics calculations, optimization of the penetration rate and can help on the decision on selection of bit nozzles. Well Features: - Well Planning: Onshore or Offshore (riser, casing, liner and open hole). Vertical or Directional Type I and Horizontal. - Drill string: 2 drill pipes, heavy weight, 2 drill collars, drilling motor and drill bit (w/ until 12 nozzles). - Volume, capacity, strokes, hydrostatic and drilling hydraulics calculations; Surface Equipment: - 04 mud pumps - Surface connections: standpipe, mud hose, swivel, top drive, kelly, stands - Choke diameter - Elevation system weight; Directional Well: - This app works with Directional Well Type I and Horizontal, only. - For other features in directional wells, we recommend the "Directional Drilling Hydraulics" application available in our portfolio in the App Store. Importing Data Files: This app imports data files from other apps available in our portfolio on the App Store: "Drilling Simulator 1, 2 and 3", "Well Control Simulator", "MPD Simulator", "Kick Tolerance", "Leak-Off Test Simulator", "Kick Game" and "Well Control Methods" 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
Verdict
The clearest difference is review sentiment: Dr. DE at 56% against Drilling Hydraulics 2's 0%. Dr. DE also leads on price (Free vs $19.99) and update cadence (every 3 months vs every 22 months). Drilling Hydraulics 2's advantage is chart position (#198 vs unranked) and iOS requirement (12.0 vs 15.6). On 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
Dr. DE is free to download; Drilling Hydraulics 2 costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Dr. DE ships an update every 3 months, Drilling Hydraulics 2 every 22 months. Both last shipped on October 24, 2026.
| Parameter | Dr. DE | Drilling Hydraulics 2 |
|---|---|---|
| Price | Free — better | $19.99 |
| Rating | 4.5 (15 ratings) — better | — |
| Positive reviews | 55.6% of reviews — better | 0.0% of reviews |
| Number of ratings | 15 — better | — |
| Update frequency | Every 3 months — better | Every 22 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #198 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 33 MB | 28 MB |
| Age rating | 17+ | 4+ |
| Developer | Pegasus Vertex, Inc. | Carlos Moura |
Customer experience
Dr. DE
Drilling Hydraulics 2
In-app purchases
Dr. DE
No in-app purchases
Drilling Hydraulics 2
No in-app purchases
Questions
Is Dr. DE free?
Is Drilling Hydraulics 2 free?
Do Dr. DE or Drilling Hydraulics 2 have ads?
Which is updated more often, Dr. DE or Drilling Hydraulics 2?
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