# Decibel Meter: Noise dB — Noise Level & SPL Analyzer

> Noise Level & SPL Analyzer (iPhone/iPad app by Duc Nguyen Ba Trung.)

- Source: https://appshunter.io/ios/app/decibel-meter-noise-db/id6788392364 (this page in markdown: same URL + `.md`)
- Developer: [Duc Nguyen Ba Trung](https://appshunter.io/developer/6784288050)
- Category: Utilities, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 14 MB
- Languages: American English
- Released: 2026-07-14
- Data updated: 2026-07-30
- User reviews in markdown: https://appshunter.io/ios/app/decibel-meter-noise-db/id6788392364/reviews.md

## What is Decibel Meter?

Decibel Meter helps you understand the sound around you in real time. Open the app, allow microphone access and instantly see the current decibel level with min, average, max and peak readings. Use it at home, at work, outdoors, at events or anywhere you want a quick picture of the noise level.

Key features:
- Real-time SPL metering with dBA, dBC and dBZ frequency weighting
- Fast and Slow time response for quick or steadier readings
- Min, Avg/Leq, Max and Peak measurements
- L10, L50 and L90 statistical noise levels
- Live 30-second level chart
- FFT spectrum analyzer with dominant frequency and peak hold
- Noise alarm with adjustable threshold
- Presets for Environment, Workplace, Concert and Sleep
- Session recording with history, notes and charts
- PDF, CSV and image sharing
- Calibration offset for matching a reference meter
- NIOSH-style hearing exposure guidance

Use Decibel Meter to:
- Check if a room is quiet enough for sleep, study or recording
- Compare noise levels between offices, cafes, streets or appliances
- Monitor loud environments such as workshops, traffic and concerts
- Save measurement sessions for later review
- Share sound level reports with others


Subscription Pricing & Terms:
Account Charge: Your Apple Account will be charged once you confirm your purchase.
Account Settings: You can manage your subscriptions and disable auto-renewal in your Account Settings after the purchase.
Auto-Renewal: Subscriptions will automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period.
Renewal Cost: The renewal cost will be charged to your account 24 hours before the end of the current period.
Free Trial: The yearly plan includes a 3-day free trial. Any unused portion of the free trial period will be forfeited when you purchase a subscription. Cancel at least 24 hours before the trial ends to avoid being charged.
Cancellation Policy: If you choose to cancel a subscription, it will remain active until the end of the period. Auto-renewal will be disabled, but no refunds will be provided for the current subscription.
Lifetime: The Lifetime option is a one-time purchase that unlocks Premium forever — no subscription, no renewal.
Terms (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vRBoPRdt804Zl65f6ehxNdFCeHi-R_O6H1_ehyPX1cYZbIj3VQ_WAnD9QLMpw1zynh5UYQXnh0sl71L/pub

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Decibel Meter Premium | $2.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Decibel Meter Premium | $19.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-07-14

No release notes.

## More apps by Duc Nguyen Ba Trung

- [Image Converter: HEIC JPG PNG](https://appshunter.io/ios/app/image-converter-heic-jpg-png/id6784288048)
- [Multi Space: Dual Social](https://appshunter.io/ios/app/multi-space-dual-social/id6784930442)
- [xFast: Share & Transfer Files](https://appshunter.io/ios/app/xfast-share-and-transfer-files/id6786939044)
- [Area Measurement by GPS Map](https://appshunter.io/ios/app/area-measurement-by-gps-map/id6787106662)
- [Sable Net Worth Tracker](https://appshunter.io/ios/app/sable-net-worth-tracker/id6789548635)

All apps by Duc Nguyen Ba Trung: https://appshunter.io/developer/6784288050

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-30.*