FFT Analyzer vs SoundMeter

FFT Analyzer is a powerful real-time spectrum analyzer for iPhone. It visualizes audio signals as a detailed frequency spectrum and waveform while presenting important measurements clearly. In addition to live microphone analysis, you can import and examine audio and video files from the Files app or Photo Library. Control playback directly from the waveform while the spectrum and measurements are recalculated for the current position. Key features: - Real-time FFT analysis using the microphone - Analysis of local audio and video files - Import from Files and Photo Library - Open compatible media directly from other apps - Interactive waveform with position slider - Play, pause, stop, and skip controls - Peak, RMS, and clipping indicators - Detection of dominant frequencies - Adjustable frequency and decibel ranges - Linear, logarithmic, and octave-based frequency axes - FFT bars, spectrum trace, and combined display - Waterfall and oscilloscope displays - Persistence, peak hold, and other visual effects - Customizable landscape layout - Extensive smoothing and level behavior settings - User interface in 18 languages File analysis also provides information such as duration, sample rate, channel count, peak values, and prominent frequency regions. Analysis remains synchronized with playback so you can inspect individual sections precisely. FFT Analyzer is designed for musicians, audio engineers, producers, educators, students, and anyone who wants to visualize and better understand audio signals. Processing takes place directly on your iPhone for fast and independent audio analysis tailored to the current signal. Export and reports Analysis results can be exported as a CSV file. The export includes the app version and a timestamp, file details and metadata, technical audio data, overall RMS, peak, and dynamic range values, dominant frequencies, detected findings, and time-based RMS, peak, and frequency values for each analysis frame.

Measure sound levels with professional-grade accuracy. SoundMeter turns your iPhone into a powerful decibel meter with real-time dB readings, spectrum analysis, and session recording. REAL-TIME SOUND MEASUREMENT - Instant decibel (dB) readings with A, C, and Z frequency weighting - Fast and slow time weighting for different measurement needs - Live min, max, average, and peak level tracking - Color-coded safety categories based on NIOSH exposure guidelines VISUAL SOUND ANALYSIS - Beautiful arc gauge with smooth animated needle - Scrolling timeline graph showing sound levels over time - Color gradient from safe green through warning orange to danger red - Sound level reference chart comparing to everyday sounds SESSION RECORDING & HISTORY - Record measurement sessions with one tap - Review past recordings with full statistics - Timeline graph replay of recorded sessions - Organized history with date, duration, and average level PRO FEATURES (One-Time Purchase) - Spectrum Analyzer: 32-band FFT frequency visualization - Unlimited session history (free tier: 3 recordings) - CSV data export for professional reports - Calibration profiles for different environments - Threshold alerts with haptic feedback SOUND REFERENCE GUIDE - Compare your readings to common sounds (whisper to jet engine) - NIOSH safe exposure time recommendations - Understand noise risk levels for hearing protection PERFECT FOR - Workplace noise assessment and OSHA compliance - Environmental noise monitoring - Music and event sound level checking - Hearing health awareness - Classroom and office noise management - Construction site safety monitoring Built with professional audio engineering principles including IEC 61672 frequency weighting standards. While not a replacement for calibrated professional equipment, SoundMeter provides reliable relative measurements for everyday noise awareness and safety.