# Volume in Pipe vs Cementing Engineer

The clearest difference is in-app purchases: Volume in Pipe at none against Cementing Engineer's 2. Cementing Engineer's advantage is update cadence (fortnightly vs every 26 months) and device support (3 vs 1). On price, rating, ads and iOS requirement there is nothing between them.

Both are free to download. Cementing Engineer sells 2 in-app purchases, starting at $9.99 per month. Volume in Pipe asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Volume in Pipe against 5.0 for Cementing Engineer. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Volume in Pipe ships an update every 26 months, Cementing Engineer fortnightly. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Volume in Pipe | Cementing Engineer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/volume-in-pipe/id1582068096/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/cementing-engineer/id6779455442/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 26 months | **Fortnightly** |
| Monetization | **Free** | Subscription |
| Size | 11 MB | 18 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kelly Gayneaux](https://appshunter.io/developer/1082576429) | [Rondo Wright](https://appshunter.io/developer/6779455444) |

## What reviewers say

### Volume in Pipe

[App page](https://appshunter.io/ios/app/volume-in-pipe/id1582068096)

Quickly estimate the gas volume within pipes, launchers, or vessels. Input operating conditions and pipe size for an approximate volume calculation. This tool is designed for rapid field estimates.

**Highlights:** Estimate gas volume, Input operating conditions, Select pipe size, Quick field estimates, Supports iPhone

**Features:** macOS Compatibility

**In-app purchases:** none


### Cementing Engineer

[App page](https://appshunter.io/ios/app/cementing-engineer/id6779455442)

This app is a field calculator for oilfield cementing operations. It allows users to input wellbore geometry and slurry details to get live, updated calculations for volumes, pressures, and pump schedules. The app also features a live well schematic and a tally book for saving and recalling job details.

**Highlights:** Field calculator for oilfield cementing, Live, updating calculations for volumes and pressures, Wellbore geometry and slurry stack input, Derived results with detailed math, Live well schematic, Tally Book for saving and recalling jobs, Offline functionality

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Annual | $79.99 | per year |


## Frequently asked questions

### Is Volume in Pipe free?

Volume in Pipe is free to download, with no in-app purchases.

### Is Cementing Engineer free?

Cementing Engineer is free to download, with in-app purchases available.

### Which has better reviews, Volume in Pipe or Cementing Engineer?

Volume in Pipe and Cementing Engineer are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do Volume in Pipe or Cementing Engineer have ads?

Neither Volume in Pipe nor Cementing Engineer shows ads.

### Which is updated more often, Volume in Pipe or Cementing Engineer?

Volume in Pipe ships an update every 26 months, and Cementing Engineer fortnightly. Most recently, Volume in Pipe was updated on October 6, 2026 and Cementing Engineer on October 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.*