1. Home
  2. Topics
  3. Check Charge

Best Check Charge Apps

250+ iOS apps curated and reviewed

4.4 avg rating
19 free apps
Updated September 2026

The best check charge apps on iPhone average 4.4★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.

Compare top Check Charge Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1HVACR Check & ChargeHVACR Check & ChargeFree4.8★ (17K)NoNoSep 2026
2Refrigerant Charge CalculatorRefrigerant Charge CalculatorFree4.4★ (10)NoYesSep 2026
3Check charge countCheck charge countFree—YesYesMay 2026
4Ref ToolsRef ToolsFree3.9★ (52)NoNoSep 2026
5ProUser Check & Charge 2.0ProUser Check & Charge 2.0Free—NoNoMay 2026
6P-T CalculatorP-T CalculatorFree4.8★ (52)NoNoAug 2026
7HVAC Charge CheckHVAC Charge Check$2.99—NoNoAug 2026
8SuperCool Slide Rule HVACSuperCool Slide Rule HVACFree4.2★ (185)NoNoAug 2026

Top Picks for Check Charge

HVACR Check & Charge#1

HVACR Check & Charge by Copeland LP

PT Charts Superheat Subcooling
Editor's Choice
🔍 Reference
4.8😊(17K ratings)
Free
HVACR Check & Charge screenshot 1
HVACR Check & Charge screenshot 2
HVACR Check & Charge screenshot 3
HVACR Check & Charge screenshot 4
HVACR Check & Charge screenshot 5
HVACR Check & Charge screenshot 6

This app provides an instant mobile refrigerant charge calculator for HVACR applications. It supports various refrigerants and allows users to calculate the correct system charge based on superheat, subcooling, or airflow, along with environmental conditions.

What We Love

  • 🚀 Convenient
  • 🚀 Great program
  • 🚀 Reliable app
  • 🚀 Easy and quick charging reference
  • 🚀 Helps take away doubt when making a case
  • 🚀 Quickly analyzes conditions and factors
  • 🚀 Awesome Freon charging app
  • 🚀 Revolutionary app
  • 🚀 Very handy and easy to use
  • 🚀 Best helper ever
  • 🚀 Makes charging systems super easy
  • 🚀 Very good for superheat calculation
  • 🚀 Great reference
  • 🚀 Most accurate charge for R410A and R22
  • 🚀 Easy to use

Room to Improve

  • 🐛 Pressure settings not helpful
  • 🔒 Concerning privacy policy
  • 🐛 Restricted temperature range
  • 🐛 Crashes and bugs
  • 🐛 Doesn't work on Apple Watch
Refrigerant Charge Calculator#2

Refrigerant Charge Calculator by Mikhail Nikitin

HVACR Check PT Chart Superheat
Strong Contender
🔧 Utilities
4.4(10 ratings)
FreeIn-App Purchases
Refrigerant Charge Calculator screenshot 1
Refrigerant Charge Calculator screenshot 2
Refrigerant Charge Calculator screenshot 3
Refrigerant Charge Calculator screenshot 4
Refrigerant Charge Calculator screenshot 5
Refrigerant Charge Calculator screenshot 6

This tool helps HVAC and refrigeration technicians quickly determine the correct refrigerant charge for various systems. It provides instant verdicts like 'Add,' 'Hold,' or 'Remove' based on superheat or subcooling measurements, supporting numerous refrigerants and unit conversions. The app functions offline and allows for saving job details and generating PDF reports.

More Check Charge apps to explore

FAQ about Check Charge

What are the best check charge apps for iPhone?
HVACR Check & Charge tops our check charge apps ranking as of September 2026, with a 4.8-star average from 17K App Store ratings, and it's free to download.
Yes — 19 of the top check charge apps we rank are free to download, including HVACR Check & Charge and Refrigerant Charge Calculator.
HVACR Check & Charge has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 250+ check charge apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app functions as an instant mobile refrigerant charge calculator specifically designed for HVACR applications. It helps contractors determine the correct system refrigerant charge for various air conditioning and refrigeration systems by considering operating conditions and environmental loads.
Key features include calculators for superheat (non-TXV), subcooling (TXV), and airflow. It also provides PT Charts (Pressure/Temperature) and can find a superheat target using psychometric calculations. The app supports a wide range of refrigerants and offers both Imperial and Metric units.

Related searches

hvac check chargeemerson check chargehvacr check & chargecheck charge countprouser check & charge 2.0