206+ iOS apps curated and reviewed
Out of 206+ wwc drum calculator apps on iOS, 16 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 3.4★ (18) | No | No | May 2026 |
| 2 |  | Free | 4.6★ (13K) | Yes | Yes | Jul 2026 |
| 3 |  | Free | 4.8★ (51) | No | No | Jul 2026 |
| 4 |  | Free | 4.5★ (12) | No | No | Jul 2026 |
| 5 |  | $9.99 | 4.8★ (225) | No | No | Jul 2026 |
| 6 |  | Free | 4.5★ (98) | No | Yes | Jul 2026 |
| 7 |  | Free was $1.99 | 4.6★ (353) | No | Yes | Jul 2026 |
| 8 |  | $7.99 | 4.7★ (1K) | No | No | Jul 2026 |
This app calculates the correct fusion pressure for HDPE and Polypropylene pipe jobs. It simplifies the process by selecting your fusion machine and entering pipe details to determine the recommended theoretical gauge pressure.
Easily convert between various units of measurement, including currencies, temperature, length, and weight. This intuitive tool provides real-time currency exchange rates and a comprehensive list of conversions for everyday use.
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 utility app provides essential calculators for accurate flow testing, covering various nozzle types, pump discharge pressures, and fire flow formulas. It also includes direct links to helpful instructional videos.
This app simplifies HVAC duct sizing calculations. It computes duct size, velocity, pressure drop, and flow rate with an intuitive interface. Supports various units and duct materials for precise HVAC design.
Calculate fluid flow rate and pressure loss in pipes. This app helps engineers determine pipe diameter, maximum pipe length, and friction loss for both liquid and gas flows, including fittings and elevation changes. Results can be shared as Excel or PDF reports.
Track fuel expenses, operating costs, and maintenance for all your vehicles. Gain insights into total cost of ownership and improve efficiency with smart reminders and analytics.
This aviation utility provides over 100 functions, conversions, and utilities for pilots. It offers accurate calculations for flight planning, performance, navigation, and aerodynamics, surpassing other E6B apps with its comprehensive and precise scientific formulas.
This app supports measurements for refrigeration, HVAC, and heating systems. It also aids in food safety, frying oil quality, and indoor climate monitoring. Quickly interpret data, create digital reports with photos, and send them via email.
Access a vast database of product information for air conditioning and refrigeration systems on your mobile device. Quickly find specifications, diagrams, and diagnostic tools. Includes AI-powered assistance and a "Where To Buy" locator.
Easily calculate natural gas orifice flow rates using the AGA 3 standard. This utility app allows users to determine MCF production for a given duration, save calculations, and export data to CSV. It functions offline, requiring no cell service.
This app provides a comprehensive suite of aviation calculators, including E6B functions, ascent/descent planning, fuel calculations, and weight & balance. It supports various unit conversions and offers customizable default units for international users.
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.
Calculate corrected API gravity for jet, gasoline, and diesel fuels at 60°F. This digital tool also determines the total weight of the fuel, replicating the functionality of physical slide calculators.
This utility app assists firefighters by calculating required fire flow for structure fires and estimating pump discharge pressures for various hose setups. It offers two methods for fire flow estimation and a detailed pump pressure calculation tool for emergency response and pre-planning.
Easily convert between a wide range of units for length, area, mass, temperature, volume, and more. This app offers a comprehensive set of conversion tools for everyday and professional use.
This tool calculates humidity-related air properties with a calculator-like interface. It supports six key parameters and provides accurate results even under extreme conditions. Ideal for HVAC, cleanrooms, and industrial drying.
Track your vehicle's fuel consumption, mileage, and expenses. Monitor fill-ups, gas prices, and maintenance costs with detailed statistics and charts. Supports multiple vehicles and fuel types.
This utility app transforms your mobile device into a portable steam calculation tool. It assists with onsite calculations for control valve stations, condensate recovery systems, and various maintenance tasks, reducing the need for multiple trips.
Easily find authorized fuel retailers offering TOP TIER™ Approved Fuels. This app helps you locate stations that meet a high-quality fuel performance standard developed by leading automotive manufacturers.