Drillstring Toolbox vs Riser Safety Margin
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!
Riser Safety Margin
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This app is a tool for application on deepwater drilling operations (Oil & Gas). About Riser Safety Margin: The slight increase in mud weight needed to offset the loss in hydrostatic pressure when the riser is disconnected from the bop and the hydrostatic pressure of the mud to the mud line is replaced by the hydrostatic of the column of sea water. Emergency disconnection can occur in blackout condition, failure of the dynamic positioning system, etc. 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. Thanks
Screenshots
Verdict
The clearest difference is iOS requirement: Riser Safety Margin at 12.0 against Drillstring Toolbox's 14.0. On price, update cadence, ads and in-app purchases 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.
Drillstring Toolbox ships an update every 39 months, Riser Safety Margin every 37 months. The most recent releases landed on September 5, 2026 and September 15, 2026 respectively.
| Parameter | Drillstring Toolbox | Riser Safety Margin |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 39 months | Every 37 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Bureau Veritas North America, Inc. | Carlos Moura |
In-app purchases
Drillstring Toolbox
No in-app purchases
Riser Safety Margin
No in-app purchases
Questions
Is Drillstring Toolbox free?
Is Riser Safety Margin free?
Do Drillstring Toolbox or Riser Safety Margin have ads?
Which is updated more often, Drillstring Toolbox or Riser Safety Margin?
Other comparisons
