# Natural Gas Pipe Size vs Two Phase Separator Lite

The clearest difference is price: Two Phase Separator Lite at Free against Natural Gas Pipe Size's $6.99. Two Phase Separator Lite also leads on iOS requirement (11.0 vs 26.0). Natural Gas Pipe Size's advantage is update cadence (every 9 months vs every 35 months). On ads, in-app purchases and device support there is nothing between them.

Two Phase Separator Lite is free to download; Natural Gas Pipe Size costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Natural Gas Pipe Size ships an update every 9 months, Two Phase Separator Lite every 35 months. The most recent releases landed on October 31, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Natural Gas Pipe Size | Two Phase Separator Lite |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/natural-gas-pipe-size/id538945071/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 35 months |
| Monetization | Paid | — |
| Size | 1 MB | 27 MB |
| Requires iOS | 26.0 | **11.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sebastjan Valic](https://appshunter.io/developer/503687385) | [Ali Pourahmadi Laleh](https://appshunter.io/developer/1218620381) |

## What reviewers say

### Natural Gas Pipe Size

[App page](https://appshunter.io/ios/app/natural-gas-pipe-size/id538945071)

Quickly calculate natural gas pipe diameters and pressure drops for installations. Supports a wide range of conditions, materials, and units, providing instant and accurate results without subscriptions or ads.

**Highlights:** Instant pipe diameter calculation, Pressure drop estimation, Supports various conditions (heat, pressure, temp), Metric and imperial units, Material and fitting selection, No internet connection required

**Features:** Vision Pro support

**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 Natural Gas Pipe Size free?

Natural Gas Pipe Size costs $6.99, 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 Natural Gas Pipe Size or Two Phase Separator Lite have ads?

Neither Natural Gas Pipe Size nor Two Phase Separator Lite shows ads.

### Which is updated more often, Natural Gas Pipe Size or Two Phase Separator Lite?

Natural Gas Pipe Size ships an update every 9 months, and Two Phase Separator Lite every 35 months. Most recently, Natural Gas Pipe Size was updated on October 31, 2026 and Two Phase Separator Lite on October 26, 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.*