# Decibel Meter – Noise Dose — Sound Level & Hearing Safety

> Sound Level & Hearing Safety (iPhone/iPad app by Shanghai Sparkfall Network Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/decibel-meter-noise-dose/id6808457256 (this page in markdown: same URL + `.md`)
- Developer: [Shanghai Sparkfall Network Technology Co., Ltd.](https://appshunter.io/developer/6807058311)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: American English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 23 more
- Released: 2026-10-28
- Data updated: 2026-10-29

## What is Decibel Meter?

Decibel Meter turns your iPhone into a sound level meter — and goes one step further: it tells you when noise starts harming your hearing.

MEASURE
• Real-time sound level with smooth gauge, Leq, peak and min/avg/max readings
• dB(A), dB(C) and dB(Z) frequency weighting with standard Fast/Slow/Impulse response — readings comparable to dedicated SPL meters
• Live level curve with a tap-to-enlarge view and the 85 dB NIOSH line
• Fullscreen big-display mode — read the level from across the room
• Auto-stop timer for fixed-duration measurements (1–60 min)
• Reference chart: compare your surroundings to everyday sounds
• Works fully offline, instant start

ANALYZE (PRO)
• Real-time spectrum analyzer: 31 third-octave bands with peak hold
• Waterfall spectrogram — see how frequencies change over time
• Dominant frequency readout with musical note — see what makes the noise
• L10/L50/L90 percentile statistics in every report

PROTECT YOUR HEARING
• Daily Noise Dose: tracks your exposure against the NIOSH 85 dB / 8h standard
• Session TWA, dose and 8-hour projection — switch NIOSH or OSHA in Settings
• See how long you can safely stay in your current environment
• Home Screen widget keeps your daily dose in sight

TRACK
• Session history with charts and per-session notes (location, source)
• Save finished measurements to Apple Health (optional, write-only)
• Share a clean report image with one tap
• Start and stop measuring with Siri Shortcuts

PRIVATE BY DESIGN
• Audio is analyzed in real time on your device — never recorded, never uploaded
• No account, no ads, no tracking. Nothing leaves your phone.

PRO — PAY ONCE, YOURS FOREVER
Upgrade once to unlock the real-time spectrum analyzer and waterfall spectrogram, dB(C)/dB(Z) weightings, PDF & CSV report export, full-history export, a custom alert threshold, a calibration offset, and iCloud history sync. No subscription, no tricks — the price is always shown upfront, and live measuring, noise dose and history stay free forever.

Note: readings are for reference and hearing awareness, not a substitute for professional calibrated equipment or medical advice.

Privacy policy: https://sparkfallgames.com/decibelmeter/privacy.html

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro | $6.99 | one-time |


## Is Decibel Meter safe?

Not enough ratings yet to assess Decibel Meter.

## Is Decibel Meter legit?

Decibel Meter – Noise Dose has limited verification signals. The AppsHunter Legitimacy Score for Decibel Meter is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-28

No release notes.

## More apps by Shanghai Sparkfall Network Technology Co., Ltd.

- [QuickCost](https://appshunter.io/ios/app/quickcost/id6807058309)

All apps by Shanghai Sparkfall Network Technology Co., Ltd.: https://appshunter.io/developer/6807058311

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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 2026-10-29.*