# Drillstring Toolbox vs Riser Safety Margin

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.

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.

## The numbers

| Metric | Drillstring Toolbox | Riser Safety Margin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/drillstring-toolbox/id1068605189/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 37 months** |
| Monetization | Free | — |
| Size | 1 MB | 8 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bureau Veritas North America, Inc.](https://appshunter.io/developer/1770295442) | [Carlos Moura](https://appshunter.io/developer/407501202) |

## What reviewers say

### Drillstring Toolbox

[App page](https://appshunter.io/ios/app/drillstring-toolbox/id1068605189)

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.

**Highlights:** Drill-stem load capacity calculation, API connection selection, Makeup torque calculation, Tensile capacity calculation, Drill pipe tube capacities

**Features:** macOS Compatibility

**In-app purchases:** none


### Riser Safety Margin

[App page](https://appshunter.io/ios/app/riser-safety-margin/id1462441253)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Drillstring Toolbox free?

Drillstring Toolbox is free to download, with no in-app purchases.

### Is Riser Safety Margin free?

Riser Safety Margin is free to download, with no in-app purchases.

### Do Drillstring Toolbox or Riser Safety Margin have ads?

Neither Drillstring Toolbox nor Riser Safety Margin shows ads.

### Which is updated more often, Drillstring Toolbox or Riser Safety Margin?

Drillstring Toolbox ships an update every 39 months, and Riser Safety Margin every 37 months. Most recently, Drillstring Toolbox was updated on September 5, 2026 and Riser Safety Margin on September 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*