Drillstring Toolbox vs CPC Utility
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Drillstring Toolbox
This utility app calculates drill-stem load capacities based on API connections and sizes. It also provides makeup torque and tensile capacity, as well as tensile and torsion capacities for drill pipe tubes.
- Drill-stem load capacity calculation
- API connection selection
- Makeup torque calculation
- Tensile capacity calculation
- Drill pipe tube capacities
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Drillstring Toolbox is a free calculator from Standard DS-1 that gives you the drill-stem load capacities you need! You can choose an API connection (along with the size you're interested in) to find its recommended makeup torque and tensile capacity. Tap the "Tube" tab to find the tensile and torsion capacities for drill pipe tubes as well!
CPC Utility
This utility app provides instant contact with well control services for emergencies. It also includes helpful calculators and lookup tables for casing, flange, coiled tubing, and nitrogen volume.
- 24/7 Well Control callout
- Casing information lookup
- Flange data
- Coiled tubing calculator
- Nitrogen volume calculator
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CPC Utility is the quickest way to get in touch with CUDD Well Control Services in the event of a well control incident, providing a 24 hr phone response with a live engineer at the click of a button. In addition to Well Control callout, the app also provides several useful calculators and lookup tables. * Casing Info - Sizes and Ratings * Flange Info - Bore Size, Gasket, Hole Pattern... * Coiled Tubing Calculator * Nitrogen Volume Calculator - Get SCF / BBL at specified temperature and pressure
Screenshots
Verdict
The clearest difference is rating: CPC Utility at 5.0 against Drillstring Toolbox's 3.3. CPC Utility also leads on update cadence (every 12 months vs every 39 months). On price, review sentiment, ratings volume and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CPC Utility holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Drillstring Toolbox ships an update every 39 months, CPC Utility every 12 months. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.
| Parameter | Drillstring Toolbox | CPC Utility |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (3 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 3 | 3 |
| Update frequency | Every 39 months | Every 12 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Bureau Veritas North America, Inc. | Thru Tubing Solutions Inc. |
Customer experience
Drillstring Toolbox
CPC Utility
In-app purchases
Drillstring Toolbox
No in-app purchases
CPC Utility
No in-app purchases
Questions
Is Drillstring Toolbox free?
Is CPC Utility free?
Which has better reviews, Drillstring Toolbox or CPC Utility?
Do Drillstring Toolbox or CPC Utility have ads?
Which is updated more often, Drillstring Toolbox or CPC Utility?
Other comparisons
