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Best Frequency Detector Tool Apps

245+ iOS apps curated and reviewed

4.2 avg rating
17 free apps
Updated October 2026

Whether you're new to frequency detector tool or looking for an upgrade, our curated collection of 245+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Frequency Detector Tool Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Frequency Detector ToolFrequency Detector ToolFree5.0★ (1)NoNoAug 2026
2Frequency Detector AnalyzerFrequency Detector AnalyzerFree4.3★ (20)NoYesOct 2026
3Frequency Meter PROFrequency Meter PRO$2.991.7★ (29)NoNoJul 2026
4FQC - Frequency CounterFQC - Frequency CounterFree—NoNoJul 2026
5HzDetect Music Frequency TunerHzDetect Music Frequency TunerFree5.0★ (2)YesYesSep 2026
6Frequency: Sound GeneratorFrequency: Sound GeneratorFree4.7★ (340)YesNoOct 2026
7RF Signal DetectorRF Signal DetectorFree4.2★ (99)YesYesOct 2026
8Frequency Analyzer SpectrumFrequency Analyzer SpectrumFree—NoNoSep 2026

Top Picks for Frequency Detector Tool

Frequency Detector Tool#1

Frequency Detector Tool by Eye Heru

Find the musical key of any Hz
Editor's Choice
🎵 Music
5.0(1 ratings)
Free
Frequency Detector Tool screenshot 1

Instantly analyze musical keys from any frequency in Hertz. It displays the corresponding musical note, cents deviation, and whether it's in key with your selected musical scale. Features vocal context notes and a full frequency chart for EQ guidance.

Frequency Detector Analyzer#2

Frequency Detector Analyzer by NEURASYNC

Spectrum Analyzer EMF Decibel
Strong Contender
🔧 Utilities
4.3(20 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.

Frequency Meter PRO#3

Frequency Meter PRO by Lubomir Havran BINARTS

Professional tool
Worth Considering
🎵 Music
1.8😞(30 ratings)
$2.99
Frequency Meter PRO screenshot 1
Frequency Meter PRO screenshot 2
Frequency Meter PRO screenshot 3

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.

What We Love

  • ✨ Identifies frequency quickly
  • 💡 Can filter sound frequencies
  • 💡 Detects harmonics
  • 💡 Useful for ultrasonic devices
  • 💡 Can be used to tune instruments
  • 💡 Good for physics labs
  • 💡 Useful for low-frequency sounds
  • 💡 Accurate for single tones
  • 💡 Good for speech therapy

Room to Improve

  • ❌ Inaccurate readings
  • ❌ Not a reliable frequency meter
  • ❌ Fake, toy, not a frequency meter
  • ❌ Useless for tuning
  • ❌ Waste of money
  • ❌ Faulty meter
  • ❌ Meaningless results
  • ❌ Rip off, scam
  • ❌ Not very good
  • ❌ Does not work
  • ❌ Garbage, out of tune, unusable
  • ❌ Crap, way off measurements
  • ❌ Incorrect frequencies
  • ❌ Worst purchase
  • ❌ Inaccurate, +/- 5 Hz at 2000Hz
  • ❌ Terrible, not accurate measurements
  • ❌ Limited and inaccurate
  • ❌ Utterly useless, readings all over the place
  • ❌ Terrible, doesn't work
  • ❌ No features
  • ❌ Worked only once
  • ❌ Inutile, not identifiable
  • ❌ Completely inaccurate, fancy looking junk
  • ❌ Inaccurate waste of money
  • ❌ Complete scam, horrible
  • ❌ Accuracy not great, ~10 Hz out
  • ❌ Does not work for me
  • ❌ Accuracy not good, jumps to nearest approximation
  • ❌ Ne marche pas correctement, imprecise data
  • ❌ Unbrauchbar, schade um das Geld
  • ❌ Pb, ne fonctionne pas
  • ❌ What a load of rubbish
  • ❌ Disappointed, inaccurate
  • ❌ Crashes on open
  • ❌ Junk, no instructions
  • ❌ Not accurate
  • ❌ Only shows certain frequencies
  • ❌ Basico ma si paga
  • ❌ Piece of crap, doesn't work
  • ❌ Crashes ever since update
  • ❌ Not accurate
  • ❌ Sound, is there sound?
  • ❌ Crashing at the push of a button
  • ❌ Doesn't work for bass guitar, random numbers
  • ❌ Problems on iPad, meter freezes
  • ❌ Does not work, odd numbers
  • ❌ Junk, locks up, off by 20 Hz
  • ❌ No instructions, buttons don't work
  • ❌ Awful App, doesn't work
  • ❌ Mala, muy mala
  • ❌ Unreliable, completely wrong results
  • ❌ Doesn't work on anything but sine wave
  • ❌ GARBAGE, barely works, crashes frequently
  • ❌ Rubbish app, does nothing
  • ❌ Awful app, doesn't work at all

More Frequency Detector Tool apps to explore

FAQ about Frequency Detector Tool

What are the best frequency detector tool apps for iPhone?
Frequency Detector Tool tops our frequency detector tool apps ranking as of October 2026, with a 5.0-star average from 1 App Store ratings, and it's free to download.
Yes — 17 of the top frequency detector tool apps we rank are free to download, including Frequency Detector Tool and Frequency Detector Analyzer.
Frequency Detector Tool has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 245+ frequency detector tool apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.