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  • Decibel Q: Sound & Light Meter screenshot 1
  • Decibel Q: Sound & Light Meter screenshot 2
  • Decibel Q: Sound & Light Meter screenshot 3

About Decibel Q: Sound & Light Meter

Professional Environmental Analysis in the Palm of Your Hand. Qmeter is an advanced scientific tool designed for professionals and enthusiasts who need precise, real-time data on their surroundings. Whether you are a sound engineer, architect, photographer, or environmental health officer, Qmeter provides the data you need with a state-of-the-art interface. Key Features • ACOUSTIC MONITORING: Track real-time decibel (dB SPL) levels with high-precision accuracy. Visualize sound fluctuations through dynamic, real-time frequency graphs. • PHOTOMETRIC ANALYSIS: Measure light intensity (Lux) instantly. Perfect for ensuring workspace safety, greenhouse monitoring, or interior lighting design. • AUGMENTED REALITY (AR) HUD: Experience the future of measurement. Use our advanced AR Overlay to visualize environmental data directly in your physical space through a sleek, futuristic Heads-Up Display (HUD). • SESSION REPORTING & PDF EXPORT: Don't just measure—document. Record measurement sessions and generate professional, scientific PDF reports. Each report includes peak levels, averages, and time-stamped progression graphs. • ENVIRONMENTAL SAFETY SCORE: Our proprietary algorithm analyzes your data to provide a unified Safety Score, helping you quickly assess if an environment meets noise and lighting safety standards. Why Qmeter? Modern Aesthetics: A premium, dark-themed interface designed for professional use. High Performance: Optimized for the latest iOS hardware with near-zero latency. Privacy First: Your measurements and reports are stored locally on your device. Download Qmeter today and turn your device into a professional-grade environmental sensor suite. #Important Note: A subscription is needed to access all features below: -ACOUSTIC MONITORING -PHOTOMETRIC ANALYSIS -SESSION REPORTING & PDF EXPORT -AD-FREE EXPERIENCE • Payment will be charged to your iTunes Account at confirmation of purchase. • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. • Account will be charged for renewal within 24 hours prior to the end of the current period. • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy : https://airy-pipe-041.notion.site/Privacy-Policy-for-QMeter-30359ade5d798023b9a0c239032523eb

What’s new

Version 1.1 · Updated February 24, 2026

Performance Improvements

App privacy

The developer, Onur Mercan, reported these privacy practices to Apple.

Data Not Linked to You

The following data, which may be collected but is not linked to your identity, may be used for the following purposes:

  • Identifiers: Device ID
  • User Content: Photos or Videos, Audio Data
  • Diagnostics: Crash Data

Used for: Analytics, App Functionality

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