Sizing US/CA vs BluArch
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
BluArch
This app simplifies HVAC system installation and servicing for contractors. It uses Bluetooth to connect with eligible air systems, allowing for quick setup, monitoring of operating parameters, and easy troubleshooting of alarms and system status directly from a phone.
- Bluetooth system setup
- Monitor operating parameters
- Verify system setup
- Diagnose alarms
- Step-by-step parts replacement
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We’ve Designed BluArch for Contractors to offer the industry’s most powerful, intuitive, and easy-to-use app. Whether you’re on a residential service call or installing 40 units at a major site, the free BluArch app’s Bluetooth® capability – paired with an enabled HVAC system -- makes set-up and troubleshooting simpler than ever. With BluArch and eligible air systems, you can easily: Install - Set up systems quickly and easily with the new Bluetooth® setup - Monitor operating parameters from your phone while charging outdoor units - Verify system setup with access to system operating status - Quickly check for alarms Service - Diagnose active alarms and alarm history - Check system operating status - Easy step-by-step parts replacement and system setup
Screenshots
Verdict
The clearest difference is rating: BluArch at 4.8 against Sizing US/CA's 3.2. BluArch also leads on ads (none vs shown) and monetization model (free vs ad-supported). Sizing US/CA's advantage is iOS requirement (10.0 vs 16.0). On price, ratings volume, update cadence and in-app purchases 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.
BluArch holds the better App Store score, 4.8 against 3.2. Both are backed by a comparable volume of ratings — 13 and 24 respectively.
Sizing US/CA ships an update every 6 weeks, BluArch monthly. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.
| Parameter | Sizing US/CA | BluArch |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (13 ratings) | 4.8 (24 ratings) — better |
| Positive reviews | 11.1% of reviews | — |
| Number of ratings | 13 | 24 — better |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 10.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 27 MB | 110 MB |
| Age rating | 17+ | 4+ |
| Developer | Gastite Products LLC | Rheem Manufacturing Company |
Customer experience
Sizing US/CA
BluArch
In-app purchases
Sizing US/CA
No in-app purchases
BluArch
No in-app purchases
Questions
Is Sizing US/CA free?
Is BluArch free?
Which has better reviews, Sizing US/CA or BluArch?
Do Sizing US/CA or BluArch have ads?
Which is updated more often, Sizing US/CA or BluArch?
Other comparisons
