Feedback Finder Pro vs iSPL PRO+

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

iSPL PRO turns your iPhone, iPad, or iPod touch into a smart Sound Pressure Level (SPL) meter using the built-in microphone. Measure surrounding noise quickly and easily with both digital and analog display modes. ### Features • Real-time sound level measurement • Current, Average, Minimum, and Maximum values • A, B, C, and D frequency weighting filters • Linear (unweighted) mode • Fast or Slow response modes • High, Normal, or Low time resolution settings • Start or stop measurements anytime with a single tap • Calibration adjustment up to ±10 dB for improved accuracy • Multiple display styles with digital and analog views • Three graphical sound level visualizations • Save and send measurement results via email • Quick reference guide with real-life noise examples (available in unweighted mode) ### Calibration The app comes pre-calibrated for the typical built-in microphone of supported Apple devices. If readings differ from a traditional SPL meter, you can fine-tune accuracy from the Settings screen. ### Important Notice iSPL PRO provides an estimate of environmental sound levels and is intended for general and entertainment use. It is not designed as a certified professional measurement instrument. ### Enjoying iSPL PRO? Please support us by leaving a rating and sharing your feedback.