# Gas Volume Calc vs Two Phase Separator Lite

The clearest difference is iOS requirement: Two Phase Separator Lite at 11.0 against Gas Volume Calc's 26.1. On price, update cadence, 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.

Gas Volume Calc ships an update every 61 months, Two Phase Separator Lite every 35 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Gas Volume Calc | Two Phase Separator Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/gas-volume-calc/id1082576430/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 61 months | **Every 35 months** |
| Monetization | Free | — |
| Size | 18 MB | 27 MB |
| Requires iOS | 26.1 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kelly Gayneaux](https://appshunter.io/developer/1082576429) | [Ali Pourahmadi Laleh](https://appshunter.io/developer/1218620381) |

## What reviewers say

### Gas Volume Calc

[App page](https://appshunter.io/ios/app/gas-volume-calc/id1082576430)

This utility estimates natural gas flow rate using standard orifice meter calculations. It's designed for field use by operators, technicians, and engineers, combining meter geometry, flowing conditions, and gas composition for quick, reliable estimates.

**Highlights:** Estimates natural gas flow rate (MCFD), Uses standard orifice meter calculations, Combines meter geometry, flowing conditions, and gas composition, Provides reliable flow estimates in seconds, Simple and dependable field workflow

**Features:** macOS Compatibility

**In-app purchases:** none


### Two Phase Separator Lite

[App page](https://appshunter.io/ios/app/two-phase-separator-lite/id1347623045)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gas Volume Calc free?

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

### Is Two Phase Separator Lite free?

Two Phase Separator Lite is free to download, with no in-app purchases.

### Do Gas Volume Calc or Two Phase Separator Lite have ads?

Neither Gas Volume Calc nor Two Phase Separator Lite shows ads.

### Which is updated more often, Gas Volume Calc or Two Phase Separator Lite?

Gas Volume Calc ships an update every 61 months, and Two Phase Separator Lite every 35 months. Most recently, Gas Volume Calc was updated on October 24, 2026 and Two Phase Separator Lite on October 9, 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.*