Comparison

Volumetric Method vs Drillstring Toolbox Premium

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

Head to head
About

Volumetric Method

Features
Read full description

This app is designed for both iPhone and iPad. This application uses the basic calculations of the Volumetric Method to control oil wells after the occurrence of kick during drilling operations on landing rigs (Onshore). - Starting on version 1.1, this app is optimized for horizontal and directional wells. It imports data files from our apps: (Driling Hydraulics, Drilling Simulators, Kick Tolerance, Kick Game, MPD Simulator and Well Control Simulators) available for sale in our portfolio on the App Store. It is can be applied on the oilfield and also help in the understanding of the Volumetric Method of well control. This app was developed based on existing spreadsheets. There is no comparison with any other software. Our goal was to create a low-cost application with the help of experts to share with drilling engineers, technicians, drillers, students and teachers of drilling engineering. There is no intention to replace the professional softwares. You can contribute with suggestions for improvements, correcting the translation to english, reporting bugs and spreading it to your friends. Thanks 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.

About

Drillstring Toolbox Premium

Features
Read full description

The DS-1 team has created this Drillstring Toolbox Premium! It's an advance calculator that does everything the free Drillstring toolbox does and more! With it you can find: - API-recommended makeup torques for drill-stem connections with whatever sizes you want to plug in. - The "T4" (maximum tensile capacity) torque for those connections, too. - Adjusted makeup torques when you want to optimize away from the standard numbers. - Tensile and torsion capacities for standard, thick-walled, and custom drill pipe tubes. - A combined load curve for whatever combination you come up with, which you can email to your colleagues. - Recommended makeup torques for many popular proprietary connections.

Screenshots

Volumetric Method4 screens
Drillstring Toolbox Premium3 screens

Verdict

The call

The clearest difference is price: Volumetric Method at $19.99 against Drillstring Toolbox Premium's $24.99. Volumetric Method also leads on iOS requirement (11.0 vs 14.0). On update cadence, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Volumetric Method costs $19.99 and Drillstring Toolbox Premium $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Volumetric Method ships an update every 38 months, Drillstring Toolbox Premium every 24 months. The most recent releases landed on September 10, 2026 and September 20, 2026 respectively.

Scorecard2 real differences ยท 4 level
Volumetric Method versus Drillstring Toolbox Premium: the parameters behind the verdict, then further details
ParameterVolumetric MethodDrillstring Toolbox Premium
Price$19.99 โ€” better$24.99
Update frequencyEvery 38 monthsEvery 24 months โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 โ€” better14.0
Further details โ€” not scored
Size16 MB1 MB
Age rating4+4+
DeveloperCarlos MouraBureau Veritas North America, Inc.

In-app purchases

None

Volumetric Method

No in-app purchases

None

Drillstring Toolbox Premium

No in-app purchases

Questions

Is Volumetric Method free?
Volumetric Method costs $19.99, with no in-app purchases.
Is Drillstring Toolbox Premium free?
Drillstring Toolbox Premium costs $24.99, with no in-app purchases.
Do Volumetric Method or Drillstring Toolbox Premium have ads?
Neither Volumetric Method nor Drillstring Toolbox Premium shows ads.
Which is updated more often, Volumetric Method or Drillstring Toolbox Premium?
Volumetric Method ships an update every 38 months, and Drillstring Toolbox Premium every 24 months. Most recently, Volumetric Method was updated on September 10, 2026 and Drillstring Toolbox Premium on September 20, 2026.

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