# Hole Volumes vs Directional Survey Methods

The clearest difference is update cadence: Hole Volumes at every 5 months against Directional Survey Methods's every 50 months. Directional Survey Methods's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price, 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 ships an update every 5 months, Directional Survey Methods every 50 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Hole Volumes | Directional Survey Methods |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/hole-volumes/id645763976/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 50 months |
| Monetization | Free | — |
| Size | 4 MB | 7 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ash Point Ltd.](https://appshunter.io/developer/567630274) | [Carlos Moura](https://appshunter.io/developer/407501202) |

## 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


### Directional Survey Methods

[App page](https://appshunter.io/ios/app/directional-survey-methods/id1130800392)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Hole Volumes free?

Hole Volumes is free to download, with no in-app purchases.

### Is Directional Survey Methods free?

Directional Survey Methods is free to download, with no in-app purchases.

### Do Hole Volumes or Directional Survey Methods have ads?

Neither Hole Volumes nor Directional Survey Methods shows ads.

### Which is updated more often, Hole Volumes or Directional Survey Methods?

Hole Volumes ships an update every 5 months, and Directional Survey Methods every 50 months. Most recently, Hole Volumes was updated on November 1, 2026 and Directional Survey Methods on November 2, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*