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Dr. DE

Dr. DE

by Pegasus Vertex, Inc.

16 ratings
9 reviews
🔧 Utilities
Free

Details

  • Released
  • Updated
  • January 11, 2015
  • November 26, 2025

Features

Developer

Pegasus Vertex, Inc.
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About

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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What's New in Dr. DE

3.2.1

November 26, 2025

Fixed issue.

User reviews

Most RecentHighest RatedLowest Rated

Useless

This use to be the best when it was an offline calculator, now it needs a data connection to load.. unfortunately we work in the oilfield and usually don’t have one in the working area
Owen 05sOwen 05s

Good when it works.

Used this app for a while. It was great. Last updates to IOS, it won’t even load. It’s useless.
kbr80kbr80

Was a very nice app

Used this app for a while. It was great. Last updates to IOS, it won’t even load. It’s useless.
kbr80kbr80

Dr.De

Hi
This app don’t open for my iPhone
Please check
Aziz SoleymaniAziz Soleymani

Great for field work!

If you’re on the my pits and you need a quick mud mix calc, this app is amazing. That’s the main feature I use, being a mud engineer. And it’s usually right on the money within 1/10 of a ppg.
redneckHuntardoredneckHuntardo
See 4 more reviews

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FAQ

What is Dr. DE used for?

Dr. DE is a mobile toolbox designed to solve drilling engineering problems quickly. It offers 29 functions across 11 categories, helping engineers and technicians with calculations related to hydraulics, hole cleaning, well control, and more.

How many functions does Dr. DE have?

Dr. DE is equipped with a substantial collection of 29 functions, divided into 11 distinct groups to cover various aspects of drilling engineering.

Is Dr. DE free to use?

Yes, Dr. DE is a free app. It does not require any payment to download or use its features.

What devices does Dr. DE support?

Dr. DE is available on iPhone, iPad, and iPod devices, making it accessible for mobile users in the field.

How often is Dr. DE updated?

The latest version of Dr. DE is 3.2.1, which was last updated on November 26, 2025. This indicates a commitment to ongoing development and improvements.

What is the age rating for Dr. DE?

Dr. DE has an age rating of 17+, suggesting it contains content or complexity suitable for mature users in the engineering field.

Does Dr. DE have ads?

No, Dr. DE does not contain advertisements. Users can utilize its engineering tools without interruption.

What is the user rating for Dr. DE?

Dr. DE has received positive feedback, with an average rating of 4.5 stars from 16 ratings.