# Hole Volumes vs Drillstring Toolbox

The clearest difference is review sentiment: Drillstring Toolbox at 100% against Hole Volumes's 0%. Drillstring Toolbox also leads on device support (3 vs 1) and iOS requirement (14.0 vs 17.0). Hole Volumes's advantage is rating (4.0 vs 3.3) and update cadence (every 5 months vs every 39 months). On price, ratings volume, 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.

Hole Volumes holds the better App Store score, 4.0 against 3.3. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews complicate that: 0% of Hole Volumes's written reviews are positive against 100% of Drillstring Toolbox's, so the app with the better star average is not the one people write more warmly about.

Hole Volumes ships an update every 5 months, Drillstring Toolbox every 39 months. The most recent releases landed on September 14, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | Hole Volumes | Drillstring Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/hole-volumes/id645763976/reviews)** | [3.3 (3 ratings)](https://appshunter.io/ios/app/drillstring-toolbox/id1068605189/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 39 months |
| Monetization | Free | Free |
| Size | 4 MB | 1 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone | **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

### Hole Volumes

[App page](https://appshunter.io/ios/app/hole-volumes/id645763976)

This app calculates various oilfield volumes, including hole, annular, tubing, and displacement. Users input depth, casing, and tubing sizes to get quick results. It supports both metric and standard units and allows for custom pipe sizes.

**Highlights:** Calculate hole volumes, Calculate annular volumes, Calculate tubing volumes, Calculate displacement volumes, Supports metric and standard units, Custom pipe size entry

**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 Hole Volumes free?

Hole Volumes 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, Hole Volumes or Drillstring Toolbox?

Hole Volumes is rated higher. Hole Volumes averages 4.0 out of 5 from 3 ratings, while Drillstring Toolbox averages 3.3 from 3 ratings.

### Do Hole Volumes or Drillstring Toolbox have ads?

Neither Hole Volumes nor Drillstring Toolbox shows ads.

### Which is updated more often, Hole Volumes or Drillstring Toolbox?

Hole Volumes ships an update every 5 months, and Drillstring Toolbox every 39 months. Most recently, Hole Volumes was updated on September 14, 2026 and Drillstring Toolbox on September 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.*