224+ iOS apps curated and reviewed
Air Density & RAD meter PRO is the household name in air density & rad meter pro, but it's far from the only option. We track 224+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | $1.99 | 4.2★ (32) | No | No | Aug 2026 |
| 2 |  | Free | 4.7★ (54K) | No | Yes | Aug 2026 |
| 3 |  | $69.99 | 4.7★ (6.9K) | No | No | Aug 2026 |
| 4 |  | Free | 4.7★ (160K) | No | Yes | Aug 2026 |
| 5 |  | Free | 4.6★ (36K) | No | Yes | Aug 2026 |
| 6 |  | Free | 4.6★ (2.4K) | No | Yes | Aug 2026 |
| 7 |  | Free | 4.7★ (10K) | No | Yes | Aug 2026 |
| 8 |  | Free | 3.4★ (19) | No | Yes | Aug 2026 |
Calculates crucial atmospheric variables like air density, density altitude, and relative horsepower. Input data can be automatically sourced via GPS and weather stations or entered manually. Supports various measurement units for temperature, altitude, and pressure.
Monitor your surroundings with this decibel meter app. It measures sound levels in real-time, providing clear visual analysis and advanced filtering options. Easily share your readings for documentation or further analysis.
This application transforms your device into a professional sound level meter, offering precise dBA and dBC measurements. It features advanced analysis tools like frequency spectrum analysis and data export, making it ideal for audio professionals and anyone interested in sound environments.
This app transforms your device into a professional sound level meter, precisely measuring ambient noise pressure. It offers advanced features like frequency analysis, historical data management, and dosimeter functions, making it useful for various applications and entertainment.
Transform your device into a professional sound level meter and audio analyzer. Measure ambient noise, monitor decibel levels, and visualize sound frequencies in real time. It also offers advanced sleep tracking with sound recognition to identify disruptions.
Measure, record, and analyze sound levels in your environment. This app offers precision metering, noise elimination tools, hearing protection features, and home audio calibration. It provides detailed reports and can be used with device microphones or external ones.
Monitor real-time air quality and receive instant alerts for AQI, temperature, and humidity. Track data from PurpleAir sensors and optionally AirNow stations. Customize widgets for home screen, lock screen, and Apple Watch for convenient access.
This tool calculates air density, density altitude, and dyno correction factors using weather data from various sources, GPS, or onboard barometers. It's designed for tuners and aviators needing precise atmospheric data for performance calculations.
This smart air purifier offers intuitive control over your home's air quality, similar to a thermostat. It provides real-time monitoring of indoor and outdoor air, detailed insights into air quality factors, and customizable smart settings for optimal comfort and allergy relief.
Monitor and improve your indoor air quality with smart devices. Get real-time insights, track trends, and receive actionable advice to enhance focus, reduce allergies, and sleep better. Control your air purifier and stay informed about pollen forecasts.
This app provides precise exposure metering for photographers, supporting both digital and analog workflows. It offers a comprehensive set of manual controls and advanced tools like a hyperfocal distance calculator.
Monitor and control your indoor air quality in real-time. Gain insights and manage your environment effectively with intelligent features, whether you're at home or away. Experience healthier living through advanced air care.
Measure lengths, distances, and areas of any surface using augmented reality. This virtual ruler and tape measure allows you to draw measurement lines directly on your phone or tablet's camera feed and export plans in various formats. It's suitable for both personal DIY projects and professional use in real estate, construction, and more.
Utilize augmented reality to scan your surroundings and create detailed 3D floor plans. Measure distances, lengths, surfaces, and areas with ease, then export your plans in PDF format for sharing. This tool eliminates the need for traditional measuring devices.
Transform your device into a versatile toolkit with a comprehensive suite of measuring instruments. This app offers a metronome, stopwatch, timer, ruler, level, and various sensors to assist with a wide range of tasks.
Measure light intensity in lux and foot candles with this 2-in-1 meter. Optimize photography settings, adjust indoor lighting, or prevent eye strain with professional-quality readings directly from your smartphone.
Monitor indoor and outdoor air quality with real-time data on various pollutants, temperature, and humidity. Track personal exposure over time and control smart air purifiers remotely for a cleaner environment.
View real-time air quality index (AQI) readings from a global network of sensors. Get instant health insights and monitor pollution levels directly on your home screen with customizable widgets.
Measure ambient noise levels with professional-quality accuracy. This app offers a spectrum analyzer, hearing test, and the ability to save and share measurements with location data. It's a powerful, cost-effective tool for personal sound monitoring.
Transform your device into a versatile measuring toolkit. It offers a comprehensive suite of 13+ tools including a barometer, altimeter, compass, metronome, stopwatch, timer, and various levels for diverse applications.