# Decibel X PRO - dB Sound Meter — Professional SPL Measurement

> Professional SPL Measurement (iPhone/iPad app by Grzegorz Rakoca.)

- Source: https://appshunter.io/ios/app/decibel-x-pro-db-sound-meter/id6747031691 (this page in markdown: same URL + `.md`)
- Developer: [Grzegorz Rakoca](https://appshunter.io/developer/1778459428)
- Category: Utilities, Music
- Price: $0.99 (on sale, was $1.29)
- Age rating: 4+
- Requires: iOS 18.4 · 3 MB
- Languages: American English
- Released: 2025-06-10
- Data updated: 2026-08-25
- User reviews in markdown: https://appshunter.io/ios/app/decibel-x-pro-db-sound-meter/id6747031691/reviews.md

## What is Decibel X PRO?

Decibel X PRO turns your device into a professional sound level meter, accurately measuring noise levels in your environment with lab-grade precision.

KEY FEATURES:
  • Professional Accuracy - Calibrated measurements with frequency weightings (A, C, Z) and time weightings (Fast, Slow, Impulse)
  • Real-Time Analysis - Live sound level monitoring with analog and digital displays
  • Spectrum Analyzer - Visualize frequency distribution and identify dominant frequencies
  • InstaDecibel - Overlay sound measurements on photos to document noise levels
  • Data Recording - Save and export measurement sessions with location data
  • History & Statistics - Review past measurements with detailed analytics
  • Reference Guide - Built-in noise level references for common environments

  PERFECT FOR:
  - Audio professionals and engineers
  - Workplace safety inspections
  - Home theater calibration
  - Environmental noise monitoring
  - Hearing protection awareness
  - Educational purposes

  TECHNICAL SPECIFICATIONS:
  - Measurement range: 30-130 dB
  - Frequency weightings: A, C, Z, ITU-R 468
  - Time weightings: Fast (125ms), Slow (1s), Impulse (35ms)
  - Calibration support for maximum accuracy

  Note: Accuracy depends on your device's microphone. For professional use, external calibrated microphone recommended.

  Transform your device into a powerful acoustic measurement tool. Download Decibel X PRO today and take control of your sound environment!


## Version history (last 2 releases)

### 1.1.1 — 2026-02-01

Bug fix

### 1.0 — 2025-06-11

No release notes.

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All apps by Grzegorz Rakoca: https://appshunter.io/developer/1778459428

## Related topics

[decibel x pro](https://appshunter.io/ios/topics/decibel-x-pro) · [decibel x pro sound meter](https://appshunter.io/ios/topics/decibel-x-pro-sound-meter)

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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 2026-08-25.*