SoundGauge: Decibel Meter
Noise Exposure & dB Meter
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
SoundGauge turns your iPhone into a real-time dB(A) sound level meter that also tells you how long that noise is safe to listen to. Point it at any room — a concert, a workshop, a busy office — and see the live reading, a plain-English context label, and your running average and peak.
Most decibel apps stop at the number. SoundGauge adds the part that matters for your ears: a safe-listening countdown based on the NIOSH 85 dB / 8-hour recommended exposure limit, so a quick glance tells you whether you're fine for hours or should step out soon.
— WHAT MAKES SOUNDGAUGE DIFFERENT —
• Safe-listening countdown, not just a number
The reading comes with how long that level is safe to listen to, based on the NIOSH 85 dB / 8-hour recommended exposure limit.
• Plain-English context labels
Quiet room, city traffic, live concert — you always know what the number means without memorizing decibel scales.
• Running average (LEQ) and peak
A fluctuating needle is hard to trust; the session average and peak give you the honest picture of the whole exposure.
• Exposure sessions with daily noise dose
Log a timed session and see its average, peak, duration, and what percent of your safe daily noise dose it used.
• Full exposure history
Every logged session is kept on a timeline you can review anytime.
• CSV export
Send your log out as CSV — for your own records or for your audiologist.
• Calibration and two-week dose trends
Pro users can fine-tune the meter to their microphone and review their daily dose at a glance.
• Private by design
Everything runs on-device. No account, no ads, and audio is never recorded or sent anywhere.
— PRICING —
Included with the app: live dB(A) meter, safe-listening time, running average (LEQ) and peak, and plain-English context labels.
SoundGauge Pro is a one-time in-app purchase — not a subscription — and unlocks timed exposure sessions with daily-dose percentages, two-week dose trends, microphone calibration, full exposure history, and CSV export.
— FEEDBACK —
Made by a small indie team. Email obeliskclubclub@gmail.com with feedback, bug reports, or feature requests.
SoundGauge gives a helpful estimate from your phone's microphone for everyday awareness. It is not a calibrated instrument and is not a substitute for professional hearing assessment or occupational noise monitoring.
Terms of Use (EULA): https://obelisk.club/decibelreader/terms
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New: live daily dose tracking with a warning when you reach your safe limit, a two-week dose trend chart, microphone calibration, and a complete Simplified Chinese interface. Also fixed the launch stability issue some devices experienced.
The developer, 永 张, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 永 张
- Size
- 742.4 KB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SoundGauge Pro $4.99
- Copyright
- Copyright © 2026 Peter Zhang. All rights reserved.