# HVAC Pipe Sizer vs TruckerDocs

The clearest difference is price: TruckerDocs at Free against HVAC Pipe Sizer's $7.99. TruckerDocs also leads on ratings volume (3 vs 1) and iOS requirement (13.0 vs 15.6). HVAC Pipe Sizer's advantage is rating (5.0 vs 4.7). On update cadence, ads, in-app purchases and device support there is nothing between them.

TruckerDocs is free to download; HVAC Pipe Sizer costs $7.99 up front. HVAC Pipe Sizer sells 1 one-off in-app purchase and TruckerDocs sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

HVAC Pipe Sizer holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

HVAC Pipe Sizer ships an update every 12 months, TruckerDocs every 8 months. The most recent releases landed on September 26, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | HVAC Pipe Sizer | TruckerDocs |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hvac-pipe-sizer-gas-plus/id342239204/reviews)** | [4.7 (3 ratings)](https://appshunter.io/ios/app/truckerdocs/id6451325452/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 8 months** |
| Monetization | **Paid** | Subscription |
| Size | 18 MB | 82 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [JLG Technology LLC](https://appshunter.io/developer/1697562807) |

## 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 |


### TruckerDocs

[App page](https://appshunter.io/ios/app/truckerdocs/id6451325452)

This app simplifies document management for truckers, eliminating the need to remember PINs or carry physical paperwork. It offers a centralized digital solution for all your essential documents, enhancing your freedom on the road.

**Highlights:** Centralized document storage, Eliminates forgotten PINs, Reduces physical paperwork, Enhances road freedom, Digital document solution

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $9.99 | per month |
| Annual Subscription | $69.99 | per year |


## Frequently asked questions

### Is HVAC Pipe Sizer free?

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

### Is TruckerDocs free?

TruckerDocs is free to download, with in-app purchases available.

### Which has better reviews, HVAC Pipe Sizer or TruckerDocs?

HVAC Pipe Sizer is rated higher. HVAC Pipe Sizer averages 5.0 out of 5 from 1 ratings, while TruckerDocs averages 4.7 from 3 ratings.

### Do HVAC Pipe Sizer or TruckerDocs have ads?

Neither HVAC Pipe Sizer nor TruckerDocs shows ads.

### Which is updated more often, HVAC Pipe Sizer or TruckerDocs?

HVAC Pipe Sizer ships an update every 12 months, and TruckerDocs every 8 months. Most recently, HVAC Pipe Sizer was updated on September 26, 2026 and TruckerDocs on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*