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Best Ultrasonic Detector Apps

250+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated October 2026

If you already know Decibel X, this is the deeper bench. 250+ ultrasonic detector apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of October 2026.

Compare top Ultrasonic Detector Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Decibel X:dB Sound Level MeterDecibel X:dB Sound Level MeterFree4.6★ (164K)NoYesNov 2026
2Pitch HunterPitch HunterFree2.3★ (3)NoNoOct 2026
3Frequency AnalyzerFrequency AnalyzerFree4.5★ (185)NoYesOct 2026
4Bat DetectorBat DetectorFree5.0★ (4)NoNoOct 2026
5microsonic Ultrasonic Sensorsmicrosonic Ultrasonic SensorsFree—NoNoMay 2026
6NSD DetectorNSD DetectorFree—NoNoSep 2026
7The Balance AuditThe Balance AuditFree—NoNoOct 2026
8Lodestone: Metal Detector EMFLodestone: Metal Detector EMFFree—NoYesSep 2026

Top Picks for Ultrasonic Detector

Decibel X:dB Sound Level Meter#1

Decibel X:dB Sound Level Meter by SkyPaw Co., Limited

Frequency Spectrum Analyzer
Editor's Choice
🔧 Utilities
4.6😐(164K ratings)
FreeIn-App Purchases
Decibel X:dB Sound Level Meter screenshot 1
Decibel X:dB Sound Level Meter screenshot 2
Decibel X:dB Sound Level Meter screenshot 3
Decibel X:dB Sound Level Meter screenshot 4
Decibel X:dB Sound Level Meter screenshot 5
Decibel X:dB Sound Level Meter screenshot 6

This tool transforms your device into a professional sound level meter, offering precise measurements of ambient noise. It features advanced calibration, frequency analysis, and data management for various applications, from personal curiosity to professional use.

What We Love

  • ⭐ Excellent app
  • 👍 Easy to use and understand
  • 🔍 Useful for various applications
  • 🎓 Helpful for hearing protection
  • 🔧 Accurate and reliable

Room to Improve

  • 💰 Expensive subscription model
  • 🔒 Misleading free trial
  • 📢 Intrusive ads
  • 🤖 Inaccurate readings compared to professional meters
  • 🤔 Confusing interface
Pitch Hunter#2

Pitch Hunter by Jared Grover

Ultrasonic detector & tones
Strong Contender
🔧 Utilities
2.3(3 ratings)
Free
Pitch Hunter screenshot 1
Pitch Hunter screenshot 2
Pitch Hunter screenshot 3
Pitch Hunter screenshot 4

This app transforms your iPhone into a sophisticated audio analysis tool. It detects and displays sound frequencies, identifies notes, and visualizes energy across the spectrum in real-time. It also features sound generation, pest repelling, and a library of animal calls.

Frequency Analyzer#3

Frequency Analyzer by Manfred Kuegel

Sound Decibel Meter, Spectroid
Worth Considering
🔧 Utilities
4.5(185 ratings)
FreeIn-App Purchases
Frequency Analyzer screenshot 1
Frequency Analyzer screenshot 2
Frequency Analyzer screenshot 3
Frequency Analyzer screenshot 4
Frequency Analyzer screenshot 5
Frequency Analyzer screenshot 6

Transform your device into a professional audio analysis tool with real-time FFT, SPL monitoring, and advanced visualization. Record, analyze, and export high-quality audio and video data for various acoustic applications.

More Ultrasonic Detector apps to explore

FAQ about Ultrasonic Detector

What are the best ultrasonic detector apps for iPhone?
Decibel X:dB Sound Level Meter tops our ultrasonic detector apps ranking as of October 2026, with a 4.6-star average from 164K App Store ratings, and it's free to download.
Yes — 20 of the top ultrasonic detector apps we rank are free to download, including Decibel X:dB Sound Level Meter and Pitch Hunter.
Decibel X:dB Sound Level Meter has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 250+ ultrasonic detector apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.