Comparison

Dr. DE vs StallionVMS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 29 drilling engineering functions
  • 11 functional groups
  • Bit hydraulics calculations
  • Hole cleaning analysis
  • Well control solutions
  • Unit conversion tools
  • Tank capacity calculations
Features
Read full description

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

About

StallionVMS

Monitor surveillance cameras in real-time and review past footage. This system offers cloud storage and advanced analytics, including object detection for people and vehicles. Receive instant notifications for triggered events.

Highlights
  • Real-time camera monitoring
  • Review past events and archives
  • Cloud storage and analytics
  • Object detection (people, vehicles)
  • Customizable event notifications
  • Bank-grade encryption
Features
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Stallion Cloud VMS Monitor your Stallion surveillance cameras in real time or review past events and archives. Stallion Cloud Video Surveillance and Analytics is an end-to-end video surveillance solution. Leveraging plug-and-play cameras to monitor your business and cloud storage and analytics. Stallion provides end-to-end solutions from single location businesses with few cameras to businesses with several cameras across multiple locations. Video is transmitted to the cloud using bank-grade encryption where it’s then processed using machine learning to detect objects such as people and vehicles. Event rules based on time schedules and object types can trigger notifications to be sent to mobile phones, email, or our video monitoring station.

Screenshots

Dr. DE4 screens
StallionVMS4 screens

Verdict

The call

The clearest difference is review sentiment: StallionVMS at 100% against Dr. DE's 56%. StallionVMS also leads on rating (5.0 vs 4.5) and iOS requirement (12.0 vs 15.6). Dr. DE's advantage is update cadence (every 3 months vs every 17 months) and ratings volume (15 vs 5). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

StallionVMS holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 15 and 5 respectively. Written reviews point the same way: 56% of Dr. DE's written reviews are positive against 100% of StallionVMS's.

UpkeepUpdate frequency

Dr. DE ships an update every 3 months, StallionVMS every 17 months. Both last shipped on October 24, 2026.

Scorecard5 real differences · 5 level
Dr. DE versus StallionVMS: the parameters behind the verdict, then further details
ParameterDr. DEStallionVMS
PriceFreeFree
Rating4.5 (15 ratings)5.0 (5 ratings) — better
Positive reviews55.6% of reviews100.0% of reviews — better
Number of ratings15 — better5
Update frequencyEvery 3 months — betterEvery 17 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size33 MB42 MB
Age rating17+4+
DeveloperPegasus Vertex, Inc.Stallion Infrastructure Services LTD

Customer experience

Dr. DE

All ratings16 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews9 reviews
Positive55.6%
Neutral0.0%
Negative44.4%

StallionVMS

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Dr. DE

No in-app purchases

None

StallionVMS

No in-app purchases

Questions

Is Dr. DE free?
Dr. DE is free to download, with no in-app purchases.
Is StallionVMS free?
StallionVMS is free to download, with no in-app purchases.
Which has better reviews, Dr. DE or StallionVMS?
StallionVMS is rated higher. Dr. DE averages 4.5 out of 5 from 15 ratings, while StallionVMS averages 5.0 from 5 ratings.
Do Dr. DE or StallionVMS have ads?
Neither Dr. DE nor StallionVMS shows ads.
Which is updated more often, Dr. DE or StallionVMS?
Dr. DE ships an update every 3 months, and StallionVMS every 17 months. Most recently, Dr. DE was updated on October 24, 2026 and StallionVMS on October 24, 2026.

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