# Tubing Stretch Calculator vs Drillstring Toolbox

The clearest difference is rating: Tubing Stretch Calculator at 4.5 against Drillstring Toolbox's 3.3. Tubing Stretch Calculator also leads on update cadence (every 2 months vs every 39 months) and iOS requirement (12.0 vs 14.0). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Tubing Stretch Calculator holds the better App Store score, 4.5 against 3.3. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Tubing Stretch Calculator ships an update every 2 months, Drillstring Toolbox every 39 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Tubing Stretch Calculator | Drillstring Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/tubing-stretch-calculator/id707560803/reviews)** | [3.3 (3 ratings)](https://appshunter.io/ios/app/drillstring-toolbox/id1068605189/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 39 months |
| Monetization | Free | Free |
| Size | 4 MB | 1 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ash Point Ltd.](https://appshunter.io/developer/567630274) | [Bureau Veritas North America, Inc.](https://appshunter.io/developer/1770295442) |

## What reviewers say

### Tubing Stretch Calculator

[App page](https://appshunter.io/ios/app/tubing-stretch-calculator/id707560803)

This utility app helps oil field professionals calculate the required tubing stretch for a desired tension. Simply input tension, depth, and tubing size to get accurate results. Supports both metric and standard units.

**Highlights:** Calculate tubing stretch, Input desired tension, Input depth, Input tubing size, Metric and standard support

**Features:** Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Tubing Stretch Calculator free?

Tubing Stretch Calculator is free to download, with no in-app purchases.

### Is Drillstring Toolbox free?

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

### Which has better reviews, Tubing Stretch Calculator or Drillstring Toolbox?

Tubing Stretch Calculator is rated higher. Tubing Stretch Calculator averages 4.5 out of 5 from 2 ratings, while Drillstring Toolbox averages 3.3 from 3 ratings.

### Do Tubing Stretch Calculator or Drillstring Toolbox have ads?

Neither Tubing Stretch Calculator nor Drillstring Toolbox shows ads.

### Which is updated more often, Tubing Stretch Calculator or Drillstring Toolbox?

Tubing Stretch Calculator ships an update every 2 months, and Drillstring Toolbox every 39 months. Most recently, Tubing Stretch Calculator was updated on October 23, 2026 and Drillstring Toolbox on October 24, 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.*