Decibel Meter dB Spectrum

About this app

Desi is the ultimate sound level meter app that brings laboratory-precision noise measurement to your iOS device. Whether you're protecting your hearing, monitoring workplace compliance, or simply curious about your acoustic environment, Desi delivers accurate, real-time decibel readings with stunning visual clarity. Professional Accuracy Calibrated SPL measurements from 30-130 dBA Multiple frequency weighting filters (A, B, C, Z, ITU-R 468) Variable time weighting (SLOW, FAST, IMPULSE) Pre-calibrated for Apple devices with custom calibration support Advanced Analytics Real-time FFT spectrum analysis Live waveform visualization Dominant frequency detection Professional-grade audio processing at 44.1kHz Health & Safety Features Daily noise exposure tracking with TWA calculations HealthKit integration for hearing health monitoring OSHA/NIOSH compliance monitoring Beautiful Interface Multiple stunning display modes: Digital, Analog, FFT, Spectrum Color-coded level indicators for instant recognition Smart Recording Save and analyze measurement sessions Comprehensive history with search functionality Premium Features: - Record unlimited measurement sessions - Full access to recording history and session management -Access to all meter types: Analog, Digital, FFT, and Spectrum Privacy & Security Your data stays yours. Desi processes all audio locally on your device with no cloud processing. Optional HealthKit integration puts you in complete control of your health data sharing. Privacy Policy: https://docs.google.com/document/d/1pxwLuTzWKrYfWHWi58DcdwJlvMhyv4r1GUXKPAGUZao/edit?usp=sharing Terms of Use: https://docs.google.com/document/d/1a5P-1lgEMU5jyKjzAzVjD7_UvhT4yYPhnZofhpV0mTc/edit?usp=sharing

This update includes visual improvements.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

1. First observed Aug 13, 2026 · 4:45 AM Free