# Sizing US/CA vs FloPro

The clearest difference is rating: FloPro at 5.0 against Sizing US/CA's 3.2. FloPro also leads on ads (none vs shown) and monetization model (free vs ad-supported). Sizing US/CA's advantage is ratings volume (13 vs 1). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

FloPro holds the better App Store score, 5.0 against 3.2. That said, the two scores are not equally well evidenced: Sizing US/CA has 13 ratings behind it against 1, so its average is the more settled of the two.

Sizing US/CA ships an update every 6 weeks, FloPro every 3 months. The most recent releases landed on June 3, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | Sizing US/CA | FloPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (13 ratings)](https://appshunter.io/ios/app/sizing-usca/id1420112805/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flopro-md/id1437827733/reviews)** |
| Number of ratings | **13** | 1 |
| Positive reviews | 11.1% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Ad-supported | **Free** |
| Size | 27 MB | 44 MB |
| Requires iOS | **10.0** | 10.3 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Gastite Products LLC](https://appshunter.io/developer/668653608) | [Watts Water Technologies, Inc](https://appshunter.io/developer/844447908) |

## What reviewers say

### Sizing US/CA

[App page](https://appshunter.io/ios/app/sizing-usca/id1420112805)

This utility app helps installers determine the correct size of flexible gas piping for their projects. It calculates the appropriate pipe size based on gas type, tubing length, supply pressure, and flow capacity. Users can also access installation guides and product information.

**Highlights:** Flexible gas pipe sizing, US and CA location selector, Automatic value adjustment, Certification card access, Installation guide viewer, Product search, Direct contact with developer

**Features:** macOS Compatibility

**In-app purchases:** none


### FloPro

[App page](https://appshunter.io/ios/app/flopro-md/id1437827733)

This tool helps diagnose gas-related issues by measuring gas pressure and flow, converting it to heat output. It provides data to ensure appliances deliver expected performance, simplifying troubleshooting for technicians and installers.

**Highlights:** Measures gas pressure (psi), Measures gas flow (CFH), Converts flow to BTU/hr heat output, Bluetooth connectivity to smart devices, Generates CSV data files, Email and print data reports

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sizing US/CA free?

Sizing US/CA is free to download, with no in-app purchases.

### Is FloPro free?

FloPro is free to download, with no in-app purchases.

### Which has better reviews, Sizing US/CA or FloPro?

FloPro is rated higher. Sizing US/CA averages 3.2 out of 5 from 13 ratings, while FloPro averages 5.0 from 1 ratings.

### Do Sizing US/CA or FloPro have ads?

Sizing US/CA shows ads; FloPro does not.

### Which is updated more often, Sizing US/CA or FloPro?

Sizing US/CA ships an update every 6 weeks, and FloPro every 3 months. Most recently, Sizing US/CA was updated on June 3, 2026 and FloPro on July 5, 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.*