Comparison

Directional Survey Methods 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

Directional Survey Methods

Features
Read full description

This application uses the formulas to calculate the survey parameters (diff of TVD, N/S, E/W, DLS) between two stations of the methods: 1. Tangential 2. Balanced Tangential 3. Minimum Curvature 4. Radius of Curvature 5. Angle Averaging Also available the formulas of the methods. This app was developed based in existing spreadsheets. There is no comparison with any other software. You can contribute with suggestions for improvements, reporting bugs and spreading it to your friends. Our portfolio for Directional Drilling available on the App Store: - "Directional Drilling" a complete app (building and plotting) with well planning, survey, multi-lateral, etc. - There are also stand-alone applications for Well Planning, Well Survey and Multi-Lateral Wells. - "3D Interpolation" to calculate a survey data between two stations. 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 your own risk. Thanks

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

Directional Survey Methods4 screens
Drillstring Toolbox Premium3 screens

Verdict

The call

The clearest difference is price: Directional Survey Methods at Free against Drillstring Toolbox Premium's $24.99. Directional Survey Methods also leads on iOS requirement (12.0 vs 14.0). Drillstring Toolbox Premium's advantage is update cadence (every 24 months vs every 50 months). On 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

Directional Survey Methods is free to download; Drillstring Toolbox Premium costs $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Directional Survey Methods ships an update every 50 months, Drillstring Toolbox Premium every 24 months. The most recent releases landed on September 15, 2026 and September 20, 2026 respectively.

Scorecard3 real differences ยท 3 level
Directional Survey Methods versus Drillstring Toolbox Premium: the parameters behind the verdict, then further details
ParameterDirectional Survey MethodsDrillstring Toolbox Premium
PriceFree โ€” better$24.99
Update frequencyEvery 50 monthsEvery 24 months โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 โ€” better14.0
Further details โ€” not scored
Size7 MB1 MB
Age rating4+4+
DeveloperCarlos MouraBureau Veritas North America, Inc.

In-app purchases

None

Directional Survey Methods

No in-app purchases

None

Drillstring Toolbox Premium

No in-app purchases

Questions

Is Directional Survey Methods free?
Directional Survey Methods is free to download, with no in-app purchases.
Is Drillstring Toolbox Premium free?
Drillstring Toolbox Premium costs $24.99, with no in-app purchases.
Do Directional Survey Methods or Drillstring Toolbox Premium have ads?
Neither Directional Survey Methods nor Drillstring Toolbox Premium shows ads.
Which is updated more often, Directional Survey Methods or Drillstring Toolbox Premium?
Directional Survey Methods ships an update every 50 months, and Drillstring Toolbox Premium every 24 months. Most recently, Directional Survey Methods was updated on September 15, 2026 and Drillstring Toolbox Premium on September 20, 2026.

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