# Drillstring Toolbox vs Workover Assistant

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.

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.

## The numbers

| Metric | Drillstring Toolbox | Workover Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (3 ratings)](https://appshunter.io/ios/app/drillstring-toolbox/id1068605189/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/workover-assistant/id1117692519/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 39 months** | Every 58 months |
| Monetization | Free | Free |
| Size | 1 MB | 3 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bureau Veritas North America, Inc.](https://appshunter.io/developer/1770295442) | [Kelly Gayneaux](https://appshunter.io/developer/1082576429) |

## 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


### Workover Assistant

[App page](https://appshunter.io/ios/app/workover-assistant/id1117692519)

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.

**Highlights:** Hydrostatic pressure calculations, Internal capacity calculations, Oil and gas well workover tools, Rig site and office utility, Accurate field calculations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Drillstring Toolbox free?

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

### Is Workover Assistant free?

Workover Assistant is free to download, with no in-app purchases.

### Which has better reviews, Drillstring Toolbox or Workover Assistant?

Workover Assistant is rated higher. Drillstring Toolbox averages 3.3 out of 5 from 3 ratings, while Workover Assistant averages 5.0 from 2 ratings.

### Do Drillstring Toolbox or Workover Assistant have ads?

Neither Drillstring Toolbox nor Workover Assistant shows ads.

### Which is updated more often, Drillstring Toolbox or Workover Assistant?

Drillstring Toolbox ships an update every 39 months, and Workover Assistant every 58 months. Most recently, Drillstring Toolbox was updated on September 5, 2026 and Workover Assistant on June 5, 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.*