# Agitator Design Pro vs Volume in Pipe

The clearest difference is price: Volume in Pipe at Free against Agitator Design Pro's $9.99. Volume in Pipe also leads on update cadence (every 26 months vs every 57 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Volume in Pipe is free to download; Agitator Design Pro costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Agitator Design Pro ships an update every 57 months, Volume in Pipe every 26 months. The most recent releases landed on September 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Agitator Design Pro | Volume in Pipe |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/volume-in-pipe/id1582068096/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 57 months | **Every 26 months** |
| Monetization | — | Free |
| Size | 1 MB | 11 MB |
| Requires iOS | **16.4** | 16.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Imran Pinjara](https://appshunter.io/developer/1484488781) | [Kelly Gayneaux](https://appshunter.io/developer/1082576429) |

## What reviewers say

### Agitator Design Pro

[App page](https://appshunter.io/ios/app/agitator-design-pro/id1492847821)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Agitator Design Pro free?

Agitator Design Pro costs $9.99, with no in-app purchases.

### Is Volume in Pipe free?

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

### Do Agitator Design Pro or Volume in Pipe have ads?

Neither Agitator Design Pro nor Volume in Pipe shows ads.

### Which is updated more often, Agitator Design Pro or Volume in Pipe?

Agitator Design Pro ships an update every 57 months, and Volume in Pipe every 26 months. Most recently, Agitator Design Pro was updated on September 15, 2026 and Volume in Pipe on October 6, 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.*