Best Hertz Frequency Measure Apps

249+ iOS apps curated and reviewed

4.3 avg rating
18 free apps
Updated September 2026

Every iPhone needs a few good hertz frequency measure apps. We benchmark 249+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Hertz Frequency Measure Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Frequency Counter+ Hz FFTFrequency Counter+ Hz FFTFree3.3★ (6)YesNoAug 2026
2Frequency: Sound GeneratorFrequency: Sound GeneratorFree4.7★ (340)YesNoSep 2026
3Frequency Detector AnalyzerFrequency Detector AnalyzerFree4.5★ (17)NoYesSep 2026
4Decibel X:dB Sound Level MeterDecibel X:dB Sound Level MeterFree4.6★ (162K)NoYesSep 2026
5Frequency AnalyzerFrequency AnalyzerFree4.5★ (166)NoYesSep 2026
6FQC - Frequency CounterFQC - Frequency CounterFreeNoNoJul 2026
7VisiWaveVisiWaveFree4.4★ (8)NoNoJul 2026
8Decibel Meter UltraDecibel Meter UltraFree4.6★ (2.5K)NoYesSep 2026

Top Picks for Hertz Frequency Measure

Frequency Counter+ Hz FFT#1

Frequency Counter+ Hz FFT by Kyu-Hee Jang

Tuner · RPM · 50/60Hz Meter
Editor's Choice
🔧 Utilities
3.3(6 ratings)
FreeAds
Frequency Counter+ Hz FFT screenshot 1
Frequency Counter+ Hz FFT screenshot 2
Frequency Counter+ Hz FFT screenshot 3
Frequency Counter+ Hz FFT screenshot 4

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.

4.7😊(340 ratings)
FreeAds
Frequency: Sound Generator screenshot 1
Frequency: Sound Generator screenshot 2
Frequency: Sound Generator screenshot 3

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.

What We Love

  • 👍 Simple and easy to use interface
  • 🎵 Accurate frequency generation
  • 💰 Free application
  • 🧘 Helpful for meditation and stress relief
  • 🔧 Multiple waveform options (sine, square, triangular, sawtooth)
  • 🎚️ Background operation capability
  • 🎯 Useful for audio calibration and testing
  • ⚡ No popup ads or payment walls

Room to Improve

  • 📢 Intrusive and inappropriate advertisements
  • 🔊 Potential audio damage to speakers/hearing
  • 🔒 Privacy concerns and data collection issues
  • 📱 UI elements off-screen on compact devices
  • 🎚️ Difficult frequency selection with slider
  • 🚫 No AirPlay support
  • ⏸️ App closes when switching to other apps
  • 😤 Pushy review request prompts
Frequency Detector Analyzer#3

Frequency Detector Analyzer by NEURASYNC

Spectrum Analyzer EMF Decibel
Worth Considering
🔧 Utilities
4.5(17 ratings)
FreeIn-App Purchases
Frequency Detector Analyzer screenshot 1
Frequency Detector Analyzer screenshot 2
Frequency Detector Analyzer screenshot 3

This application transforms your device into a precise sound analysis tool. It offers real-time frequency detection, visualization, and data logging for musicians, engineers, and curious individuals. Gain clarity and accuracy in understanding the soundscape around you.

More Hertz Frequency Measure apps to explore

FAQ about Hertz Frequency Measure

What are the best hertz frequency measure apps for iPhone?
Frequency Counter+ Hz FFT tops our hertz frequency measure apps ranking as of September 2026, with a 3.3-star average from 6 App Store ratings, and it's free to download.
Yes — 18 of the top hertz frequency measure apps we rank are free to download, including Frequency Counter+ Hz FFT and Frequency: Sound Generator.
Frequency Counter+ Hz FFT shows ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 249+ hertz frequency measure apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
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.
Frequency Counter+ Hz FFT is available for iPhone and iPod touch devices. It is designed to utilize the microphone capabilities of these Apple products.