# Gas Pipe Sizing Calculator vs AC Nio Admin

The clearest difference is price: AC Nio Admin at Free against Gas Pipe Sizing Calculator's $1.99. AC Nio Admin also leads on rating (5.0 vs 4.0). Gas Pipe Sizing Calculator's advantage is update cadence (every 13 months vs every 28 months) and iOS requirement (12.0 vs 15.6). On ratings volume, ads, in-app purchases and device support there is nothing between them.

AC Nio Admin is free to download; Gas Pipe Sizing Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AC Nio Admin holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

Gas Pipe Sizing Calculator ships an update every 13 months, AC Nio Admin every 28 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Gas Pipe Sizing Calculator | AC Nio Admin |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/gas-pipe-sizing-calculator/id596009129/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ac-nio-admin/id6456705466/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 13.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 13 months** | Every 28 months |
| Monetization | Paid | **Free** |
| Size | 0 MB | 39 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Connor Kelley](https://appshunter.io/developer/596009132) | [Aiphone Corporation](https://appshunter.io/developer/964569222) |

## What reviewers say

### Gas Pipe Sizing Calculator

[App page](https://appshunter.io/ios/app/gas-pipe-sizing-calculator/id596009129)

This utility app simplifies gas pipe sizing by performing calculations based on BTU load, run length, and gas type. It eliminates the need for manual chart and codebook referencing, providing the minimum required pipe size quickly.

**Highlights:** Calculates minimum gas pipe size, Input BTU load, Input longest run length, Select gas type (LP or Natural), Designed for low pressure (0.5psi)

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

**In-app purchases:** none


### AC Nio Admin

[App page](https://appshunter.io/ios/app/ac-nio-admin/id6456705466)

This app allows users to manage and monitor multiple AC NIO instances. You can view the status of doors, floors, inputs, and outputs, and even override them. User management and access to recent reports are also included.

**Highlights:** Manage multiple AC NIO instances, View status of doors, floors, inputs, outputs, Override and resume system components, Manage users and credentials, Access recent reports

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gas Pipe Sizing Calculator free?

Gas Pipe Sizing Calculator costs $1.99, with no in-app purchases.

### Is AC Nio Admin free?

AC Nio Admin is free to download, with no in-app purchases.

### Which has better reviews, Gas Pipe Sizing Calculator or AC Nio Admin?

AC Nio Admin is rated higher. Gas Pipe Sizing Calculator averages 4.0 out of 5 from 4 ratings, while AC Nio Admin averages 5.0 from 2 ratings.

### Do Gas Pipe Sizing Calculator or AC Nio Admin have ads?

Neither Gas Pipe Sizing Calculator nor AC Nio Admin shows ads.

### Which is updated more often, Gas Pipe Sizing Calculator or AC Nio Admin?

Gas Pipe Sizing Calculator ships an update every 13 months, and AC Nio Admin every 28 months. Most recently, Gas Pipe Sizing Calculator was updated on November 1, 2026 and AC Nio Admin on November 3, 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.*