# NoiseTrace -  Decibel Meter — Sound Level, SPL & dB Camera

> Decibel meter and field documentation app for sound level measurement and reporting. (iPhone/iPad app by Chengdu Yunbyte Network Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/noisetrace-decibel-meter/id6773603791 (this page in markdown: same URL + `.md`)
- Developer: [Chengdu Yunbyte Network Technology Co., Ltd.](https://appshunter.io/developer/1804864993)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 13.0 · 77 MB
- Languages: American English
- Released: 2026-06-07
- Data updated: 2026-09-04
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/noisetrace-decibel-meter/id6773603791/reviews.md

## What is NoiseTrace?

Measure the noise. Keep the context.

NoiseTrace is a decibel meter and field-documentation app for everyday sound checks. View live sound levels, a real-time curve and key statistics. When context matters, capture photos or videos with sound-level overlays and optional time, scene and location details. Group multiple measurements into a project to compare sessions and export a clear report.

LIVE SOUND LEVEL METER
●Monitor real-time dB readings and the level history
●Review LAeq, Lmax, Lmin, L10, L50 and L90 statistics
●See contextual reference guidance for common environments
●Calibrate readings to account for microphone differences between devices

PHOTO AND VIDEO DOCUMENTATION
●Add live dB, statistics and elapsed time to photo watermarks
●Record video while collecting sound-level data for a synchronized overlay
●Optionally include time, scene, address and coordinates
●Capture multiple photos for a more complete record of one location

PROJECTS AND REPORTS
●Group related measurements into one monitoring project
●Continue a previous setup with one tap
●Compare LAeq, Lmax and possible threshold exceedances across sessions
●Export project summaries and individual measurements as PDF or CSV

HISTORY AND REFERENCE
●Revisit measurements, curves, statistics and media attachments
●Schedule reminders for follow-up checks
●Review environmental sound reference information based on China’s GB 3096 standard

USE CASES
Homes, neighbors, renovation work, offices, study spaces, sleep environments, traffic and outdoor activities.

IMPORTANT
Results vary by device and microphone. NoiseTrace is an environmental reference tool, not a calibrated professional sound level meter. Measurements are for personal reference and documentation only and do not carry legal, administrative or certified testing authority. For formal testing or dispute resolution, contact a qualified professional service.

Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Real-time dB monitoring
- Sound level statistics (LAeq, Lmax, Lmin)
- Photo/video documentation with sound overlays
- Project grouping for comparisons
- Exportable PDF/CSV reports
- Measurement history and reminders

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| 年付（专业会员） | $19.99 | per year |
| 年付（高级会员） | $14.99 | per year |
| 月付（专业会员） | $2.99 | per month |
| 月付（高级会员） | $0.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 高级会员月度 | $0.99 | one-time |
| 高级会员年度 | $14.99 | one-time |
| 高级会员永久 | $29.99 | one-time |
| 专业会员年度 | $2.99 | one-time |
| 专业会员年度 | $19.99 | one-time |
| 专业会员永久 | $29.99 | one-time |



## Frequently asked questions about NoiseTrace

### What is NoiseTrace used for?

NoiseTrace is used to measure ambient noise levels, providing real-time decibel readings and statistics. It also allows users to document sound environments by capturing photos and videos with sound-level overlays, making it useful for everyday sound checks and personal documentation.

### Does NoiseTrace have ads?

Yes, NoiseTrace contains advertisements. As a free application with in-app purchases, it utilizes ads to support its availability.

### What are the subscription options for NoiseTrace?

NoiseTrace offers several subscription plans, including monthly and annual options for 'Advanced Member' and 'Professional Member' tiers. Monthly plans cost $0.99 and $2.99, while annual plans are priced at $14.99 and $19.99 respectively.

### Can NoiseTrace readings be calibrated?

Yes, NoiseTrace allows users to calibrate readings to account for microphone differences between devices. This helps to improve the accuracy of the measurements for personal reference.

### What kind of reports can NoiseTrace generate?

NoiseTrace can export project summaries and individual measurements as PDF or CSV files. These reports can include key statistics and media attachments, providing a clear overview of documented sound sessions.

### Is NoiseTrace suitable for professional testing?

No, NoiseTrace is intended as an environmental reference tool and not a calibrated professional sound level meter. Measurements are for personal reference and documentation only and do not carry legal or certified testing authority.

### What devices is NoiseTrace available on?

NoiseTrace is available on iPhone, iPad, and iPod devices. It is designed to run on these Apple platforms.

### How often is NoiseTrace updated?

The latest version of NoiseTrace was released on August 29, 2026, indicating recent activity. Updates typically occur to improve functionality and address any issues.

## Version history (last 2 releases)

### 2.0 — 2026-08-29

NoiseTrace 2.0 adds a complete field-documentation and project workflow:

• Create monitoring projects to group and compare multiple measurements
• Continue a previous setup with one tap
• Capture multiple photos with live dB, time, scene and optional location watermarks
• Record video while collecting sound-level data for a synchronized overlay
• Compare LAeq, Lmax and possible exceedances in project reports
• Export individual and project reports as PDF or CSV
• Schedule follow-up reminders and review GB 3096 reference guidance
• Calibrate readings for your device
• Updated NoiseTrace branding and interface
• Fixes for sign-in, membership status, camera permissions, video navigation and report limits

Measurements are for environmental reference only and do not replace a professional sound level meter.

### 1.0 — 2026-06-07

No release notes.

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## More apps by Chengdu Yunbyte Network Technology Co., Ltd.

- [Toolkk: Tools, Calculator, PDF](https://appshunter.io/ios/app/toolkk-tools-calculator-pdf/id1669654009)

All apps by Chengdu Yunbyte Network Technology Co., Ltd.: https://appshunter.io/developer/1804864993

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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 2026-09-04.*