250+ iOS apps curated and reviewed
The best fft analyzer apps on iPhone average 4.4★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free was $10.99 | 4.6★ (1K) | Yes | Yes | Aug 2026 |
| 2 |  | Free | 5.0★ (4) | No | No | Aug 2026 |
| 3 |  | Free | — | No | No | Jun 2026 |
| 4 |  | $4.99 | — | No | No | Jul 2026 |
| 5 |  | Free | 4.3★ (15) | No | No | May 2026 |
| 6 |  | $9.99 | 4.8★ (90) | No | No | Aug 2026 |
| 7 |  | Free | 4.6★ (161K) | No | Yes | Aug 2026 |
| 8 |  | Free | 2.3★ (3) | Yes | No | Aug 2026 |
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.
This application provides real-time audio spectrum analysis with clear, smooth visuals. It offers advanced features like peak hold and multiple window functions, all processed locally on your device without ads or data collection.
Visualize sound from your microphone as a waveform and spectrum analysis. Identify frequency characteristics, detect peaks, and analyze howling with pinch-to-zoom gestures. Ideal for sound adjustment and analysis.
This real-time audio analysis app provides precision sound measurement and visualization. It's ideal for detecting sound issues, room tuning, and speaker calibration, offering detailed frequency analysis for musicians and audio professionals.
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.
This utility transforms your device into a real-time audio frequency analyzer. It visualizes sound frequencies from 20 Hz to 20 kHz using the microphone, displaying amplitude and peak frequencies. It's designed for musicians, audio engineers, and sound enthusiasts.
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.
Visualize audio in real-time with various data graphs like RTA Bar, FFT, and Spectrogram. Offers full octave and 1/3 octave analysis with linear or logarithmic scales. Displays peak and current dB data in a sleek, functional interface.
Visualize sound in real-time with this audio analysis tool. It measures sound pressure levels and analyzes digital frequency levels, offering a reliable reference for sound checks and adjustments in various environments.
Transform your device into a professional audio analysis tool. Visualize sound in real-time with a high-resolution spectrum, perform precise sine sweep measurements, and analyze frequency content over time. Save, compare, and export your audio data.