Comparison

Sizing US/CA vs A/C Recharge Assistant

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read full description

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

About

A/C Recharge Assistant

This app, when used with a Smart Chip Pro, guides you through recharging your vehicle's A/C system. It ensures accurate refrigerant levels to provide cold air, preventing over or undercharging. The process is designed to be simple and can be completed in under 15 minutes.

Highlights
  • Accurate A/C recharge
  • Real-time fill level calculation
  • Guided step-by-step process
  • 15-minute recharge time
  • No mechanical skills required
  • Pairs with Smart Chip Pro
Features
Read full description

When paired with Smart Chip™ products, the A/C Recharge Assistant provides you with a quick and accurate A/C recharge, so you can have cold air blowing through your vehicle again - without any worry of overcharging the system. Overcharging your system produces the same result as undercharging: hot air in the vehicle cabin. So getting your refrigerant fill level correct is the key to recharging your A/C system. SMART CHIP™ (REQUIRED) Smart Chip wirelessly pairs with the A/C Recharge Assistant and calculates optimum refrigerant fill level in real time based on outside temperature and humidity. Smart Chip is available at a major automotive retailer near you. EASY & ACCURATE The A/C Recharge Assistant walks you through the process, making it easy for anyone to accurately fill their A/C system in 15 minutes or less. No mechanical skills required! 1. Turn Smart Chip on. 2. Pair Smart Chip with smart phone using the A/C Recharge Assistant app. 3. Smart Chip will automatically pair through the app. 4. Take outside temperature and humidity reading to calculate optimum fill. 5. Place Smart Chip in center A/C vent. 6. Start engine and set A/C to max. 7. Add refrigerant. 8. Stop adding refrigerant when alerted by app. TECHNICAL SUPPORT Visit blasterproducts.com/rechargeapp to view video tutorials and to get in touch with Smart Chip technical support. Notice: This app requires a Smart Chip® A/C Temperature Gauge in order to recharge your A/C system. Visit blasterproducts.com/rechargeapp for more details.

Screenshots

Sizing US/CA4 screens
A/C Recharge Assistant4 screens

Verdict

The call

Sizing US/CA and A/C Recharge Assistant both sit at 3.2 stars, but that hides the real split: 50% of A/C Recharge Assistant's written reviews are positive against 11% of Sizing US/CA's. A/C Recharge Assistant also leads on ads (none vs shown) and monetization model (free vs ad-supported). Sizing US/CA's advantage is update cadence (every 6 weeks vs every 5 months). On price, rating, ratings volume 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.2 for Sizing US/CA against 3.3 for A/C Recharge Assistant. Both are backed by a comparable volume of ratings — 13 and 6 respectively. Written reviews are what separate them: 11% of Sizing US/CA's written reviews are positive against 50% of A/C Recharge Assistant's.

UpkeepUpdate frequency

Sizing US/CA ships an update every 6 weeks, A/C Recharge Assistant every 5 months. The most recent releases landed on June 3, 2026 and June 11, 2026 respectively.

Scorecard4 real differences · 6 level
Sizing US/CA versus A/C Recharge Assistant: the parameters behind the verdict, then further details
ParameterSizing US/CAA/C Recharge Assistant
PriceFreeFree
Rating3.2 (13 ratings)3.3 (6 ratings) — better
Positive reviews11.1% of reviews50.0% of reviews — better
Number of ratings13 — better6
Update frequencyEvery 6 weeks — betterEvery 5 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS10.09.3 — better
Further details — not scored
Size27 MB19 MB
Age rating17+4+
DeveloperGastite Products LLCTSI Products, Inc.

Customer experience

Sizing US/CA

All ratings13 ratings
Positive46.2%
Neutral15.4%
Negative38.5%
Written reviews9 reviews
Positive11.1%
Neutral11.1%
Negative77.8%

A/C Recharge Assistant

All ratings6 ratings
Positive50.0%
Neutral16.7%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Sizing US/CA

No in-app purchases

None

A/C Recharge Assistant

No in-app purchases

Questions

Is Sizing US/CA free?
Sizing US/CA is free to download, with no in-app purchases.
Is A/C Recharge Assistant free?
A/C Recharge Assistant is free to download, with no in-app purchases.
Which has better reviews, Sizing US/CA or A/C Recharge Assistant?
A/C Recharge Assistant is rated higher. Sizing US/CA averages 3.2 out of 5 from 13 ratings, while A/C Recharge Assistant averages 3.3 from 6 ratings.
Do Sizing US/CA or A/C Recharge Assistant have ads?
Sizing US/CA shows ads; A/C Recharge Assistant does not.
Which is updated more often, Sizing US/CA or A/C Recharge Assistant?
Sizing US/CA ships an update every 6 weeks, and A/C Recharge Assistant every 5 months. Most recently, Sizing US/CA was updated on June 3, 2026 and A/C Recharge Assistant on June 11, 2026.

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