TPI Smart Probe vs Sizing US/CA
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TPI Smart Probe
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1. SP341 Sub-mini K type Thermocouple Thermometer : Measure temperature. 2. SP555 Vane Anemometer : Measure air flow velocity. 3. SP565 Hot wire Anemometer : Measure air flow velocity. 4. SP620 Dual Manometer : Measure dual input differential pressure. 5. SP1000 Ambient Air Direct CO2 Meter : Measure ambient CO2. 6. SP700 CO Meter : Measure CO. 7. SP597 Thermo hygrometer : Measure temperature and humidity. 8. SP323 Clamp thermometer : Measure temperature. 9. SP670 High pressure meter : Measure high pressure.
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
Screenshots
Verdict
The clearest difference is ads: TPI Smart Probe at none against Sizing US/CA's shown. TPI Smart Probe also leads on iOS requirement (8.0 vs 10.0). 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.
TPI Smart Probe ships an update monthly, Sizing US/CA every 6 weeks. The most recent releases landed on October 12, 2026 and October 16, 2026 respectively.
| Parameter | TPI Smart Probe | Sizing US/CA |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.2 (13 ratings) — better |
| Positive reviews | — | 11.1% of reviews |
| Number of ratings | — | 13 — better |
| Update frequency | Monthly — better | Every 6 weeks |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 8.0 — better | 10.0 |
| Further details — not scored | ||
| Size | 123 MB | 27 MB |
| Age rating | 4+ | 17+ |
| Developer | Yong Dae Lee | Gastite Products LLC |
In-app purchases
TPI Smart Probe
No in-app purchases
Sizing US/CA
No in-app purchases
Questions
Is TPI Smart Probe free?
Is Sizing US/CA free?
Do TPI Smart Probe or Sizing US/CA have ads?
Which is updated more often, TPI Smart Probe or Sizing US/CA?
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