# HVAC Pipe Sizer vs Offset Calc App ANSI

The clearest difference is in-app purchases: Offset Calc App ANSI at none against HVAC Pipe Sizer's 1. Offset Calc App ANSI also leads on update cadence (monthly vs every 12 months) and review sentiment (100% vs 80%). On rating, ads, monetization model and device support there is nothing between them.

HVAC Pipe Sizer costs $7.99 and Offset Calc App ANSI $6.99 up front. HVAC Pipe Sizer sells 1 one-off in-app purchase. Offset Calc App ANSI asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for HVAC Pipe Sizer against 5.0 for Offset Calc App ANSI. That said, the two scores are not equally well evidenced: Offset Calc App ANSI has 19 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 80% of HVAC Pipe Sizer's written reviews are positive against 100% of Offset Calc App ANSI's.

HVAC Pipe Sizer ships an update every 12 months, Offset Calc App ANSI monthly. The most recent releases landed on September 9, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | HVAC Pipe Sizer | Offset Calc App ANSI |
| --- | --- | --- |
| Price | $7.99 | **$6.99** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-plus/id342239204/reviews) | [5.0 (19 ratings)](https://appshunter.io/ios/app/offset-calc-app-ansi/id1463259532/reviews) |
| Number of ratings | 1 | **19** |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 12 months | **Monthly** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#200** |
| Size | 18 MB | 95 MB |
| Requires iOS | 15.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Steffen Weber](https://appshunter.io/developer/1456703068) |

## What reviewers say

### HVAC Pipe Sizer

[App page](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-plus/id342239204)

Calculate gas piping systems for low and high pressure. Input flow, pressure, or diameter to find pipe sizes, velocity, and equivalent lengths. Supports English and metric units, with extensive pipe fitting data.

**Highlights:** Low and high pressure gas pipe sizing, Calculate flow, pressure drop, diameter, and velocity, Universal app for iPhone and iPad, English and metric unit support, Built-in pipe fitting equivalent length tables, Slider controls for quick adjustments

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Equipment Locator | $9.99 | one-time |


### Offset Calc App ANSI

[App page](https://appshunter.io/ios/app/offset-calc-app-ansi/id1463259532)

**Currently charting:** #200 Top Paid · Productivity (US App Store)

This industrial pipe construction tool calculates pipe offsets and weights according to ANSI/ASME standards. It offers imperial and metric calculations for various pipe sizes and fittings, helping users save material, time, and stress.

**Highlights:** Imperial and metric offset calculations, Pipe and profile weight calculations, ANSI/ASME standard nominal diameters, Calculation with length or elbow angle, Offsets with tee, History of calculations

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

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Pipe Sizer free?

HVAC Pipe Sizer costs $7.99, and also offers in-app purchases.

### Is Offset Calc App ANSI free?

Offset Calc App ANSI costs $6.99, with no in-app purchases.

### Which has better reviews, HVAC Pipe Sizer or Offset Calc App ANSI?

HVAC Pipe Sizer and Offset Calc App ANSI are both rated 5.0 out of 5 on the App Store, from 1 and 19 ratings respectively.

### Do HVAC Pipe Sizer or Offset Calc App ANSI have ads?

Neither HVAC Pipe Sizer nor Offset Calc App ANSI shows ads.

### Which is updated more often, HVAC Pipe Sizer or Offset Calc App ANSI?

HVAC Pipe Sizer ships an update every 12 months, and Offset Calc App ANSI monthly. Most recently, HVAC Pipe Sizer was updated on September 9, 2026 and Offset Calc App ANSI on September 21, 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.*