# Drillstring Toolbox Premium

> Drillstring Toolbox Premium (iPhone/iPad app by Bureau Veritas North America, Inc..)

- Source: https://appshunter.io/ios/app/drillstring-toolbox-premium/id1222651738 (this page in markdown: same URL + `.md`)
- Developer: [Bureau Veritas North America, Inc.](https://appshunter.io/developer/1770295442)
- Category: Utilities
- Price: $24.99
- Age rating: 4+
- Requires: iOS 14.0 · 1 MB
- Languages: American English
- Released: 2020-09-12
- Data updated: 2026-06-25
- User reviews in markdown: https://appshunter.io/ios/app/drillstring-toolbox-premium/id1222651738/reviews.md

## What is Drillstring Toolbox Premium?

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.


## Version history (last 4 releases)

### 2.0 — 2026-01-21

We've updated the app to include proprietary connection torques taken from Standard DS-1. There's no calculation here (you'll have to contact the manufacturers for that), but you can see the popular sizes and makeup torques available.

### 1.2 — 2022-09-22

We've updated the connection information with the newest numbers from API Spec 7-2 (check out the Edit button for including "non-preferred" connections). This also paves the way for some exciting updates coming!

### 1.1.2 — 2020-10-01

We've adjusted the app to work with dark mode, if that's your preference!

### 1.0.1 — 2020-09-12

No release notes.

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## More apps by Bureau Veritas North America, Inc.

- [Drillstring Toolbox](https://appshunter.io/ios/app/drillstring-toolbox/id1068605189)
- [DS-1 5th Edition Criteria](https://appshunter.io/ios/app/ds-1-5th-edition-criteria/id1529674684)

All apps by Bureau Veritas North America, Inc.: https://appshunter.io/developer/1770295442

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-25.*