# Hole Volumes vs Drilling Engineering

The clearest difference is review sentiment: Drilling Engineering at 50% against Hole Volumes's 0%. Drilling Engineering also leads on ratings volume (19 vs 3) and device support (3 vs 1). Hole Volumes's advantage is update cadence (every 5 months vs every 42 months) and rating (4.0 vs 3.8). On price, ads, in-app purchases and monetization model 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 3.8. That said, the two scores are not equally well evidenced: Drilling Engineering has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 0% of Hole Volumes's written reviews are positive against 50% of Drilling Engineering'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, Drilling Engineering every 42 months. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Hole Volumes | Drilling Engineering |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/hole-volumes/id645763976/reviews)** | [3.8 (19 ratings)](https://appshunter.io/ios/app/drilling-engineering/id891302915/reviews) |
| Number of ratings | 3 | **19** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 42 months |
| Monetization | Free | Free |
| Size | 4 MB | 8 MB |
| Requires iOS | 17.0 | **7.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ash Point Ltd.](https://appshunter.io/developer/567630274) | [PT. Pertamina (Persero)](https://appshunter.io/developer/541838859) |

## 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


### Drilling Engineering

[App page](https://appshunter.io/ios/app/drilling-engineering/id891302915)

This app provides essential tools for oil and gas professionals involved in drilling operations. It offers unit conversions, a comprehensive drilling calculator, API tubular data, stuck pipe problem identification, and well control calculations.

**Highlights:** Petroleum Unit Conversion, Drilling Calculator (90+ calculations), API Tubular Data, Stuck Pipe Problem Identification, Well Control Kill Sheet

**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 Drilling Engineering free?

Drilling Engineering is free to download, with no in-app purchases.

### Which has better reviews, Hole Volumes or Drilling Engineering?

Hole Volumes is rated higher. Hole Volumes averages 4.0 out of 5 from 3 ratings, while Drilling Engineering averages 3.8 from 19 ratings.

### Do Hole Volumes or Drilling Engineering have ads?

Neither Hole Volumes nor Drilling Engineering shows ads.

### Which is updated more often, Hole Volumes or Drilling Engineering?

Hole Volumes ships an update every 5 months, and Drilling Engineering every 42 months. Most recently, Hole Volumes was updated on October 2, 2026 and Drilling Engineering on October 11, 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.*