SuperCool Slide Rule HVAC

Name: SuperCool Slide Rule HVAC
Rating: 4.2 (193 reviews)
Author: Designstein, llc

By: Designstein, llc

Utilities

Features & Capabilities

SuperCool HVAC Slide Rule is a comprehensive utility for HVAC technicians. It provides an interactive experience with on-screen guidance, solutions, and step-by-step procedures for repairs and diagnostics.

Superheat & Subcooling charging for popular refrigerants with on-screen corrective actions
Duct sizing & layout calculator for flex, round metal, rectangular and oval
Compressor windings troubleshooter with acceptable resistance or unacceptable resistance
Conversions for everything HVAC
Capacitor series and parallel installation output values
Airflow troubleshooting for heating & cooling with acceptable ranges and remedies if airflow is too high or too low
Wet Bulb calculator
Belt Sizing calculator
And much, much more

User Growth & Download Statistics

App Education Developer Tools Programming

By:

Designstein, llc

Rating:

4.20

(193)

Version:

1.0 Last updated: 2017-01-26

Version code:

841715727

Creation date:

2017-01-26

Compatible devices:

Size:

38.45MB

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-07-04

Compare stats and ranking:

Ranking

# 122,654 ▼ 1,127

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Designstein, llc

Apple Apps Store

https://apps.apple.com/us/app/supercool-slide-rule-hvac/id1193020259

Website:

http://www.supercoolsliderule.com

User Reviews

Users praise SuperCool Slide Rule HVAC as a powerful, time-saving HVAC reference with a broad toolset and a user-friendly interface that makes quick, accurate calculations and aids training. However, licensing headaches—trial expiries and reinstalls—along with unclear pricing, undermine the experience. The app also lags updates for newer refrigerants and occasionally suffers UI/chart issues. Overall, the tool is highly valued for fieldwork, but its ongoing licensing instability and outdated content limit its usefulness without fixes.

Pros

Comprehensive toolset for duct sizing, PT charts, superheat/subcooling and diagnostics.
Quick, precise numbers in seconds with an easy-on-the-eyes UI.
Excellent training aid and communication tool for managers and techs.
Widely used in the field as a go-to HVAC reference.
Positive impact on workflow, helping move to the next call quickly.

Cons

Licensing/trial instability requiring constant uninstall/reinstall due to perpetual free-trial prompts.
Missing updates for newer refrigerants (R32, R454b) and an outdated refrigerant list.
Pricing/purchase confusion and perceived paywalls; some users are prompted to buy or avoid the app.
Occasional UI/chart bugs (e.g., superheat/subcooling charts scrambled) affecting usefulness.

Recent reviews

Best app there is but any chance of an update with R454B?

by Ad*****, 2026-06-10

The app expires at the worst time and will not work until you delete the app and re download it. This is the third time the app expires when I’m at a site with no internet and no cell service. What am I supposed to do? I’ve complained about this before, I think they use this underhanded tactic to artificially inflate their app download count. PLEASE STOP IT! ZERO STARS!!!!