Quiet Meter vs SpettroLive

Quiet Meter shows you how loud it is. You buy it once, for $4.99, and that is the end of the transaction. There is no subscription, no account and no analytics. The app is free to use, with an occasional full-screen ad that never appears while the meter is running, and one $4.99 payment removes the ads for good. HONEST ABOUT ACCURACY An iPhone microphone is designed for speech, not measurement. It applies automatic gain, compresses very loud sounds and rolls off deep bass. Quiet Meter converts the microphone level into an estimated dB SPL. It is an estimate, not a measurement. Nothing in this app is suitable for an official, workplace or legal purpose, and it makes no claims about hearing or health. CALIBRATION THAT STICKS A common complaint about decibel apps is that they read 28 dB in a silent room. Quiet Meter lets you fix that: set a calibration offset from -20 to +20 dB against a meter you trust, in half-decibel steps, and it stays set. The whole session (minimum, average and maximum) is corrected together. WHAT YOU GET FOR FREE, FOREVER • A live reading in large numerals you can read across a room • Minimum, average and maximum for the session • A rolling 45-second chart, colored by level • The full calibration screen, with a live reading to calibrate against • A reference table: library 40 dB, conversation 60, traffic 80, concert 110 • Your three most recent saved sessions, with notes and plain-text sharing • Dark mode, large tap targets, and full VoiceOver labeling QUIET METER PRO, $4.99 ONCE • No ads, permanently • Your complete session history, however many you save • Sessions you saved before buying reappear. Nothing was ever deleted • Share a session with the full reading-by-reading data, for a spreadsheet The microphone is requested only when you tap Start, and only ever used to read the level as the sound arrives. No audio is recorded for playback, saved, or sent anywhere. ABOUT THE ADS The free app shows a full-screen ad from Google AdMob at natural moments only: after you save a measurement, or after you share one. Never while the meter is running, never while the microphone is on, and never in your first sessions. The ads are non-personalized. Quiet Meter does not ask to track you and never sends your measurements, notes or audio anywhere. WHAT QUIET METER DOES NOT DO No analytics. No tracking. No account. No cloud sync. No subscription. No health advice. It will ask you to rate it once, after your fifth saved session, and never again. Your sessions live only on this iPhone, so deleting the app deletes them. Share one as text first if you want to keep a copy.

SpettroLive turns your iPhone into a real-time spectrum analyzer and helps you get rid of feedback, ringing and boomy sound in meetings, conferences, presentations and small events. LIVE ANALYZER - Spectrum from 20 Hz to 20 kHz on a logarithmic scale, updated in real time - Numbered peaks with frequency, level and musical note - The spectrum is split into zones: choose how many peaks to show and each zone displays its own, from lows to highs - Peak hold line with adjustable hold time from 0.5 to 5 seconds - Freeze the graph to read it calmly - Optimized for both portrait and landscape FIX AUDIO - Detects feedback and howling, room resonances and 50/60 Hz electrical hum - For each problem it suggests the cut in dB, the Q factor for a parametric EQ and the nearest band of a 31-band graphic EQ - Analyzes voice balance and flags boominess, muddy or harsh sound - 1/3-octave bars with the bands to fix highlighted - Share a report with the frequencies to fix GUIDED RING-OUT Slowly raise the microphone gain: SpettroLive records every frequency that starts to ring and tells you how to cut it on your mixer. Your system is ready in minutes. WHO IT'S FOR Sound engineers, speakers, teachers, event organizers, meeting rooms, churches, clubs and anyone using a microphone and speakers. PRIVACY Audio is analyzed on the device only: nothing is recorded or sent. Available in English, Italian and German. Note: levels are in dBFS and do not replace a calibrated sound level meter; suggestions are a guide and should always be checked by ear.