222+ iOS apps curated and reviewed
Out of 222+ hz frequency reader apps on iOS, 19 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 | 3.7★ (3) | Yes | No | Jul 2026 |
| 2 |  | Free | 4.4★ (8) | No | No | Jul 2026 |
| 3 |  | Free | 4.5★ (97) | No | Yes | Jul 2026 |
| 4 |  | Free | 4.7★ (156K) | No | Yes | Jul 2026 |
| 5 |  | Free | 4.7★ (48K) | No | Yes | Jul 2026 |
| 6 |  | Free | 4.7★ (340) | Yes | No | Jul 2026 |
| 7 |  | Free | 4.5★ (3K) | No | Yes | Jul 2026 |
| 8 |  | Free | 4.6★ (36K) | Yes | Yes | Jul 2026 |
This app transforms your iPhone into a powerful audio analyzer. It offers four distinct modes to measure sound frequencies, tune instruments, analyze motor speeds, and check mains stability. Advanced features include measurement history, comparison tools, and CSV export.
Visualize sound waves in real-time by detecting and displaying their frequencies in Hertz. Experience an augmented reality view of the audio environment around you.
Transform your device into a professional audio analysis tool with advanced FFT analysis, SPL monitoring, and detailed visualizations. Record, analyze, and export audio data with precision calibration and multiple weighting filters.
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.
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.
Generate various sound waves, including sine, square, sawtooth, and triangle, with adjustable frequencies from 1Hz to 22000Hz. Visually observe animated sound waves and control volume. Useful for testing hearing, speakers, instruments, and even cleaning water from speakers.
Analyze sound frequencies and decibel levels with this advanced tool. Ideal for tuning audio systems, it offers real-time spectrum analysis and sound metering for various applications.
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.
Generate sound frequencies from 1Hz to 25,000Hz with a simple interface. Features include wave visualization, adjustable sensitivity, and multiple waveform options. Use it for hearing tests, pet training, or as a prank tool.
Detect electromagnetic fields (EMF) around you using your phone's sensors. Identify high-radiation zones in your home and workplace to better organize your environment and potentially improve well-being. Measure EMF emitted by various electronic devices and appliances.
Create pure sine wave audio tones across a wide frequency range. This tool is ideal for tuning instruments, conducting hearing tests, performing science experiments, and testing audio equipment. Easily adjust frequencies and volume, with support for AirPlay devices.
This app provides precise noise measurement with a real-time decibel gauge and a frequency analyzer for detailed acoustic analysis. It tracks minimum, average, and maximum levels, offering historical graphs for sound fluctuations. Ideal for professionals and enthusiasts needing accurate sound monitoring.
Analyze audio frequencies in real-time using your device's microphone. Visualize audio levels, noise, and frequency ranges with a spectrum analyzer and oscilloscope. Export data for further analysis.
Generate precise audio tones from 20 Hz to 20,000 Hz with various waveforms. Utilize binaural beats for meditation, sleep, and focus. Also includes a speaker cleaning function to improve audio quality.
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.
This app allows you to read and listen to books and documents in various formats, including PDF and EPUB. It offers text-to-speech functionality, customizable reading settings, and a built-in book manager for your library. Enjoy an ad-free and registration-free reading experience.
This application analyzes audio input from your microphone, displaying both the waveform and amplitude spectrum in real-time. It offers extensive customization for display, calculation, and signal generation.
Generate sound waves across a wide frequency range to test hearing limits. Explore potential uses like deterring pests or competing with friends to see who can hear higher pitches. An optional premium upgrade removes ads and unlocks additional waveform options.
Test your device's audio output and microphone functionality. This app plays specific frequencies and measures decibel levels to help identify speaker issues or microphone obstructions. Upgrade for unlimited testing and an ad-free experience.
This app generates custom soundscapes using harmonizing tones to promote balance and well-being. Create personalized playlists for relaxation, energy, or stress relief, with features also available on iWatch.