Drillstring Toolbox vs Workover Assistant
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!
Workover Assistant
This utility app assists oil and gas field personnel with essential calculations for well workovers. It provides tools for hydrostatic pressure, internal capacity, and other critical functions, serving as a convenient resource for rig site or office use.
- Hydrostatic pressure calculations
- Internal capacity calculations
- Oil and gas well workover tools
- Rig site and office utility
- Accurate field calculations
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Workover Assistant is designed to help field personnel perform quick, accurate calculations related to oil and gas well workovers. It includes tools for hydrostatic pressure, internal capacity, and other common workover functions—making it a handy companion for the rig site or office.
Screenshots
Verdict
The clearest difference is rating: Workover Assistant at 5.0 against Drillstring Toolbox's 3.3. Drillstring Toolbox's advantage is iOS requirement (14.0 vs 16.6). On price, ratings volume, update cadence 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.
Workover Assistant holds the better App Store score, 5.0 against 3.3. Both are backed by a comparable volume of ratings — 3 and 2 respectively.
Drillstring Toolbox ships an update every 39 months, Workover Assistant every 58 months. The most recent releases landed on September 5, 2026 and June 5, 2026 respectively.
| Parameter | Drillstring Toolbox | Workover Assistant |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (3 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 39 months — better | Every 58 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 1 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Bureau Veritas North America, Inc. | Kelly Gayneaux |
Customer experience
Drillstring Toolbox
Workover Assistant
In-app purchases
Drillstring Toolbox
No in-app purchases
Workover Assistant
No in-app purchases
Questions
Is Drillstring Toolbox free?
Is Workover Assistant free?
Which has better reviews, Drillstring Toolbox or Workover Assistant?
Do Drillstring Toolbox or Workover Assistant have ads?
Which is updated more often, Drillstring Toolbox or Workover Assistant?
Other comparisons
