Best Frequency Counter+ Hz Fft Apps

250+ iOS apps curated and reviewed

4.3 avg rating

18 free apps

Updated September 2026

Out of 250+ frequency counter+ hz fft apps on iOS, 18 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Frequency Counter+ Hz Fft Apps (September 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Frequency Counter+ Hz FFT	Free	3.3★ (6)	Yes	No	Aug 2026
2	Frequency Analyzer Spectrum	Free	—	No	No	Sep 2026
3	Frequency Generator & Analyzer	Free	—	No	Yes	Jun 2026
4	FQC - Frequency Counter	Free	—	No	No	Jul 2026
5	Frequency: Sound Generator	Free	4.7★ (340)	Yes	No	Sep 2026
6	Frequency Conversion	$2.99	—	No	No	Jun 2026
7	Counter - plus/minus	Free	—	No	No	May 2026
8	Spectral Bands: SDR Client	Free	—	No	No	May 2026

Top Picks for Frequency Counter+ Hz Fft

Frequency Counter+ Hz FFT by Kyu-Hee Jang

Tuner · RPM · 50/60Hz Meter

Editor's Choice

🔧 Utilities

3.3(6 ratings)

FreeAds

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.

Frequency Analyzer Spectrum by Haitam Baid

Audio Spectrum Analyzer Hz

Strong Contender

🌟 Lifestyle

0.0(0 ratings)

Free

Frequency Analyzer Spectrum screenshot 1

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Frequency Analyzer Spectrum screenshot 5

Frequency Generator & Analyzer by CODIGITAL SOLUTIONS

Hz Tone Test & Audio Measure

Worth Considering

🔧 Utilities

0.0(0 ratings)

FreeIn-App Purchases

Frequency Generator & Analyzer screenshot 1

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Frequency Generator & Analyzer screenshot 4

Frequency Generator & Analyzer screenshot 5

More Frequency Counter+ Hz Fft apps to explore

FQC - Frequency Counter

Measure frequencies & notes

Free

🔧 Utilities

(0)

Frequency: Sound Generator

by Lucija Jaksic

Free

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.

Generate sine, square, sawtooth, triangle wavesAdjustable frequency (1Hz-22000Hz)Animated sound wave visualization

🔧 Utilities

(340)

free with in-app purchases

Frequency Conversion

Convert between Frequency Unit

Spectral Bands: SDR Client

RTL-SDR & WebSDR Signal Client

1-22 kHz Wave Generator

The Standard Counting App

See the frequencies around you

Free

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.

Detects sound frequenciesVisualizes sound waves in real-timeMeasures in Hertz

🔧 Utilities

(8)

free

Spectrum Lab - Audio Analyzer

Frequency Spectrum Analyzer

RF Calculator & Visualizer

Free

🔧 Utilities

(0)

SpectralScan Audio Analyzer

Spectrum, RTA & Sound Meter

Free

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.

Real-time frequency spectrum visualizationSine sweep measurements for system responseSpectrogram for time-frequency analysis

🔧 Utilities

(6)

free with in-app purchases

FFTWave

by Eisaku Nozu

Free

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.

Microphone waveform displaySpectrum analysis via Fourier transformFrequency characteristic checking

This app simplifies measuring glider wing frequency. Place your device on the wingtip, initiate the measurement, and gently rock the wing. The app automatically calculates and displays the resonant frequency, typically within 15 seconds and accurate to +/- 1 beat per second.

Automatic frequency calculationUses device sensorsStable measurement detection

Evaluate using VC curves

Subwoofer Frequency Test

by Leafgreen

Free

Test the low-frequency capabilities of your speakers with precise sound frequencies. Pinpoint the lowest bass your audio system can produce, from 15Hz to 100Hz, to ensure you're not missing out on deep sounds in your music.

Precise low range sound frequenciesFrequencies from 15Hz to 100HzTest sounds in 5Hz increments

🎵 Music

(10)

free

FAQ about Frequency Counter+ Hz Fft

What are the best frequency counter+ hz fft apps for iPhone?

Frequency Counter+ Hz FFT tops our frequency counter+ hz fft apps ranking as of September 2026, with a 3.3-star average from 6 App Store ratings, and it's free to download.

Are there free frequency counter+ hz fft apps for iPhone?

Yes — 18 of the top frequency counter+ hz fft apps we rank are free to download, including Frequency Counter+ Hz FFT and Frequency Analyzer Spectrum.

Does Frequency Counter+ Hz FFT have ads or in-app purchases?

Frequency Counter+ Hz FFT shows ads and has no in-app purchases, according to its App Store listing as of September 2026.

How many frequency counter+ hz fft apps are on the App Store?

We track 250+ frequency counter+ hz fft apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.

What is Frequency Counter+ Hz FFT?

Frequency Counter+ Hz FFT is a utility app that uses your iPhone's microphone to analyze audio frequencies. It offers modes for instrument tuning, motor RPM measurement, and mains hum detection.

What devices does Frequency Counter+ Hz FFT support?

Frequency Counter+ Hz FFT is available for iPhone and iPod touch devices. It is designed to utilize the microphone capabilities of these Apple products.