YOUR SOUND TOOLS. NOW ON MAC.
Decibel Meter & Sound Spectrum brings your sound-level meter and frequency tools to a full-window Mac Control Room, with expanded controls on Mac, iPhone, and iPad.
A CONTROL ROOM BUILT FOR THE BIG SCREEN
See sound level, 1/3-octave RTA, FFT, level history, waterfall, and estimated noise dose together. Expand an instrument for a closer look. On Mac, use the desktop sidebar, Instruments menu, and keyboard navigation. Tap a frequency in the Control Room's RTA, FFT, or waterfall to follow the same region across those views. Compact iPhone layouts focus on one instrument at a time.
12 APP LANGUAGES
Choose English, Dutch, French, German, Italian, Japanese, Korean, Portuguese (Brazil), Simplified Chinese, Spanish, Traditional Chinese, or Vietnamese in Settings. Reports, Apple Watch/widget screens, and Siri shortcut phrases currently remain in English.
START WITH A FREE LIVE METER
Read estimated A-weighted sound levels from your microphone, with minimum, average, and maximum readings. On larger iPad screens, see the instruments together in a live Control Room preview. Spectrum Pro unlocks expanded instruments and saving.
MORE CONTROL WITH SPECTRUM PRO
• Frequency analysis with RTA, FFT, bars, line, and scrolling waterfall
• System RTA, Feedback, Hum, and Waterfall analyzer presets
• A, B, C, Z, and ITU-R 468 weighting; Fast, Slow, and Impulse response
• Live color waveform with rolling/buffer views, peak/RMS dBFS and cursor inspection
• Search saved sessions and recordings by title, notes, date and media type
• Export session PDF, CSV, chart PNG and JSON, with optional original audio
• Named calibration profiles and guided comparison with a trusted physical meter
• Estimated noise dose and configurable loud-noise alerts
RECORD WHAT YOU MEASURE
Optionally save AAC or WAV audio alongside a measurement session. Record video with microphone audio and an embedded sound-level overlay. Name recordings, add notes, inspect saved-audio waveforms and seek during playback. Export original audio/video and recording details. Save live-waveform PNG images or CSV envelope data. Recording starts only when you choose it.
GUIDED SOUND CHECKS
Investigate Hum & Buzz, Feedback Tone, or Venue Sound Check. Capture before and after an adjustment, compare readings, and save or share the result. Keep the same microphone, position, calibration, and settings for meaningful comparisons.
CHOOSE YOUR INPUT
On Mac, use the microphone or compatible audio interface selected in macOS Sound settings. Microphones and gain settings differ: use an appropriate reference for calibration. An interface line output does not measure room sound pressure.
APPLE PLATFORM TOOLS
On supported iPhone and iPad hardware, use Live Activity and Dynamic Island. Apple Watch is a remote for the active iPhone session; it does not use the Watch microphone or HealthKit. Optional iCloud sync covers saved measurement sessions and calibration profiles.
SPECTRUM PRO
Choose monthly or annual auto-renewable subscriptions, or a one-time Lifetime purchase. Apple displays your localized price and any eligible introductory offer before purchase. Manage or cancel subscriptions in your Apple Account. Existing purchases, including active legacy weekly subscriptions, remain honored.
MEASUREMENT AND PRIVACY
Readings are device estimates, not IEC/ANSI Class 1/2 certification or certified dosimetry. Accuracy depends on the microphone, gain, calibration, and conditions. Waterfall colors show relative frequency strength; FFT values are dBFS.
Audio is processed on device. Optional audio/video recordings remain local and are excluded from the app's optional iCloud sync. Export only when you choose. No tracking or advertising.
Privacy: https://gqbunny.com/decibel-meter-sound-spectrum-privacy.php
Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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