# Volumetric Method vs Workover Assistant

The clearest difference is price: Workover Assistant at Free against Volumetric Method's $19.99. Volumetric Method's advantage is iOS requirement (11.0 vs 16.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

Workover Assistant is free to download; Volumetric Method costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Volumetric Method ships an update every 38 months, Workover Assistant every 58 months. The most recent releases landed on September 10, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Volumetric Method | Workover Assistant |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/workover-assistant/id1117692519/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 38 months** | Every 58 months |
| Monetization | — | Free |
| Size | 16 MB | 3 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Carlos Moura](https://appshunter.io/developer/407501202) | [Kelly Gayneaux](https://appshunter.io/developer/1082576429) |

## What reviewers say

### Volumetric Method

[App page](https://appshunter.io/ios/app/volumetric-method/id1067133508)

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

**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 Volumetric Method free?

Volumetric Method costs $19.99, with no in-app purchases.

### Is Workover Assistant free?

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

### Do Volumetric Method or Workover Assistant have ads?

Neither Volumetric Method nor Workover Assistant shows ads.

### Which is updated more often, Volumetric Method or Workover Assistant?

Volumetric Method ships an update every 38 months, and Workover Assistant every 58 months. Most recently, Volumetric Method was updated on September 10, 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.*