Drillstring Toolbox Premium vs DDToolsPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Drillstring Toolbox Premium
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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.
DDToolsPro
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This tool will help directional drillers and company men with day to day calculations for standard directional drilling and a segmented (survey) tool for curves! Terms of use : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: DDToolsPro at $9.99 against Drillstring Toolbox Premium's $24.99. DDToolsPro also leads on update cadence (every 2 months vs every 24 months). Drillstring Toolbox Premium's advantage is in-app purchases (none vs 2) and iOS requirement (14.0 vs 18.2). On ads 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
Drillstring Toolbox Premium costs $24.99 and DDToolsPro $9.99 up front. DDToolsPro sells 2 in-app purchases, starting at $12.99 per month. Drillstring Toolbox Premium asks for nothing beyond the download.
Drillstring Toolbox Premium ships an update every 24 months, DDToolsPro every 2 months. The most recent releases landed on September 20, 2026 and September 14, 2026 respectively.
| Parameter | Drillstring Toolbox Premium | DDToolsPro |
|---|---|---|
| Price | $24.99 | $9.99 — better |
| Update frequency | Every 24 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 1 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Bureau Veritas North America, Inc. | Michael Blake |
In-app purchases
Drillstring Toolbox Premium
No in-app purchases
DDToolsPro
- DD Tools Pro Unlock - Monthly$12.991 Month
- DD Tools Pro Unlock - Annual$129.991 Year
Questions
Is Drillstring Toolbox Premium free?
Is DDToolsPro free?
Do Drillstring Toolbox Premium or DDToolsPro have ads?
Which is updated more often, Drillstring Toolbox Premium or DDToolsPro?
Other comparisons
