250+ iOS apps curated and reviewed
If you already know HVACR Check & Charge, this is the deeper bench. 250+ refrigerant calculator app for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.8★ (17K) | No | No | Aug 2026 |
| 2 |  | Free | 4.0★ (3) | No | No | May 2026 |
| 3 |  | Free | 4.6★ (13) | No | No | May 2026 |
| 4 |  | Free | 4.8★ (52) | No | No | Aug 2026 |
| 5 |  | Free | 3.9★ (52) | No | No | Aug 2026 |
| 6 |  | Free | 4.4★ (10) | No | Yes | Aug 2026 |
| 7 |  | Free | 4.0★ (8) | No | Yes | Aug 2026 |
| 8 |  | Free | 4.2★ (185) | No | No | Aug 2026 |
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.
This reference tool converts pressure and temperature for industrial refrigeration. It supports common refrigerants like ammonia and freon, allowing professionals to easily calculate values such as overheating for compressors and condensers.
This mobile application provides HVACR service technicians with accurate refrigerant data on the go. It allows for quick system diagnostics and response by calculating pressure-temperature relationships, superheat, and subcooling. Supports various refrigerants, including newer HFOs and older HFCs/HCFCs.
This tool simplifies HVAC/R technician tasks by calculating pressure/temperature relationships, superheat, and subcool. It automatically adjusts for altitude and offers English/Metric units. Easily access favorite refrigerants and supplementary information.
This app provides HVACR technicians with essential tools and information for field service. It includes refrigerant calculators, troubleshooting guides, product finders, and access to spare parts. Listen to educational podcasts to enhance your knowledge on the go.
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.
This tool provides HVAC technicians with instant access to pressure and temperature data for over 100 refrigerants. It allows users to input one value to find the other, view detailed refrigerant properties, and email comprehensive charts and data.
This app offers a comprehensive suite of tools for HVAC technicians. It provides interactive guides, step-by-step repair instructions, and calculators for various HVAC calculations including superheat, subcooling, and duct sizing.
This app functions as a scientific calculator, enabling users to input and edit complex formulas with ease. It supports formula history, variable memory, and various number system conversions for accurate calculations.
This app provides essential tools for HVAC technicians and electricians, including BTU load sizing, duct calculations, and refrigerant pressure-temperature charts. It offers a free tier with core functions and an optional Pro upgrade for advanced features like voltage drop calculations and unlimited job saving.
This app offers a comprehensive suite of calculators for everyday tasks and advanced mathematical needs. It includes tools for finance, unit conversion, health, and time calculations, all within a user-friendly interface.
Accurately calculate the cooling capacity needed for cold rooms, storage, and freezers. Input room details, insulation, temperatures, and product information for precise, data-driven recommendations. Generate shareable PDF reports for your projects.
This tool helps convert between metric tonnes, ODP tonnes, and CO2-equivalent tonnes for substances controlled by the Montreal Protocol. It features two modes: 'Actual Values' and 'Kigali Amendment', and supports English, French, and Spanish.
This app provides HVACR professionals with essential tools for refrigerant management. It offers electronic PT charts, subcooling and superheat calculations, and detailed information on refrigerants. Users can also validate product authenticity and access educational videos.