Feedback Finder Pro vs Frequency Analyzer

Feedback Finder Pro is the essential tool for anyone working with live sound. Instantly identify feedback frequencies before they become a problem. REAL-TIME FREQUENCY DETECTION • Precise FFT-based analysis identifies feedback frequencies from 20Hz to 20kHz • Large, easy-to-read frequency display shows the dominant frequency in Hz • Visual spectrum analyzer displays all frequencies at a glance • Top 3 peak frequencies shown with magnitude levels SMART FEEDBACK ALERTS • Configurable sensitivity from instant detection to sustained monitoring • Visual alerts when feedback is detected • Sustained frequency tracking prevents false positives CUSTOMIZABLE SETTINGS • Adjustable refresh rate for battery optimization • Multiple spectrum range presets (Full, Low-Mid, Mid-High, Feedback range, Sub, High) • Dark and light mode support PERFECT FOR: • Live sound engineers • Musicians and bands • Worship teams • Event technicians • Anyone working with PA systems

See exactly what you're hearing. Frequency Analyzer: SpectraLab turns your iPhone into a precision audio analysis toolkit. Measure live frequency content, generate test tones, and visualize sound in real time. ANALYZE Point your phone at any sound source and see the dominant frequency instantly, in Hz, with a clean live readout. Perfect for tuning instruments, diagnosing hums and buzzes, checking speaker response, or just satisfying your curiosity about the sound around you. SPECTROGRAM Watch sound unfold over time with a vivid, color-coded spectrogram. Spot patterns, harmonics, and anomalies that a single number can't show you. GENERATOR Produce precise test tones and sweeps on demand. Sine, square, and more, with fine control over frequency and amplitude. Useful for speaker testing, hearing checks, room acoustics, and calibration. LIBRARY Save your measurements and exports, organize them with custom labels, search and filter by type, and quickly preview or share anything you've captured. FREE TO START The core analyzer, generator, and library are free to use. No account required. GO PRO Upgrade for larger FFT sizes, every window and weighting function, full-length spectrogram history, unlimited saved presets and export history, noise threshold alerts, and CSV/PDF report export. Try Pro free for 7 days. Whether you're a musician tuning by ear, an audio hobbyist, or just someone who wants to know "what frequency is that?". SpectraLab gives you a clear, accurate answer in seconds. Subscription pricing: - Monthly and Yearly plans available, each with a 7-day free trial - Payment charged to your Apple ID account at confirmation of purchase - Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period - Manage or cancel your subscription anytime in your Apple ID account settings - Privacy Policy and Terms of Use available in the app and on our website