Sizing US/CA vs FloPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sizing US/CA
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.
- Flexible gas pipe sizing
- US and CA location selector
- Automatic value adjustment
- Certification card access
- Installation guide viewer
- Product search
- Direct contact with developer
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Size Gastite® and FlashShield™ flexible gas piping with this convenient and easy-to-use application for the iPhone. This app allows flexible gas pipe installers to determine the appropriate size Gastite pipe recommended for the installation at hand. Based on the project’s gas type, length of tubing run, supply pressure, pressure drop, and flow capacity – the app will calculate the appropriate size Gastite/FlashShield CSST for your application. Features : Includes a location selector for US and CA Scroll wheel automatically adjusts depending on values selected Find your certification card to link a digital version to your device FAQs View the latest Design and Installation Guide Search for Gastite and FlashShield products Contact Page submits questions and requests directly to Gastite The Gastite and FlashShield flexible gas piping systems are designed and warranted to provide sufficient gas volume and pressure for proper appliance performance using the appropriate sizing tables and methods detailed in the Design and Installation Guide and this Mobile Sizing App. Accordingly, the design pressure loss on the Gastite and FlashShield piping system under maximum probable flow conditions, from the point of delivery to the inlet connection of the equipment shall be such that the supply pressure at the equipment is greater than the minimum pressure required for proper equipment operation. Minimum Requirements - iOS version 8
FloPro
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.
- 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
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Diagnosing or troubleshooting gas related issues at the appliance level is easier than ever with the FloPro-MD. The FloPro-MD removes the guesswork and offers you a means of determining gas pressure (psi), gas flow (CFH) and converting the information to heat output in BTU/hr. By doing so, it allows you to determine if the proper amount of gas is flowing to the equipment and the equipment is delivering the expected output per specifications. Thousands of service technicians and installers, like yourself, are out on the road today troubleshooting issues with gas burning equipment. Most of you use a manometer to determine gas pressure at the equipment, but do you know what the actual flow of gas is in cubic feet per hour (CFH) and the equivalent BTU/hr output capacity of that flowing gas? Probably not. Whether you are performing a start-up on a gas generator, a boiler or responding to a customer complaint that their appliance is not working as it should, you can feel confident that the information collected by the FloPro-MD will put both yours and your customer’s mind at ease. The FloPro-MD is a compact, light-weight, electronic device that can be easily installed in a matter of minutes. The installation could be temporary to verify proper gas flow during start-up and commissioning of gas equipment or for a longer period of time to log information to assist in troubleshooting a new or repeat problem. The FloPro-MD communicates via Bluetooth connectivity with any smart device. With the data that is collected by the device, a csv file is generated that can be emailed to you or your customer or a hard copy printed and submitted with a work report and/or filed.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Sizing US/CA | FloPro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (13 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 11.1% of reviews | — |
| Number of ratings | 13 — better | 1 |
| Update frequency | Every 6 weeks — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.0 — better | 10.3 |
| Further details — not scored | ||
| Size | 27 MB | 44 MB |
| Age rating | 17+ | 4+ |
| Developer | Gastite Products LLC | Watts Water Technologies, Inc |
Customer experience
Sizing US/CA
FloPro
In-app purchases
Sizing US/CA
No in-app purchases
FloPro
No in-app purchases
Questions
Is Sizing US/CA free?
Is FloPro free?
Which has better reviews, Sizing US/CA or FloPro?
Do Sizing US/CA or FloPro have ads?
Which is updated more often, Sizing US/CA or FloPro?
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