Decibel X

Decibel X:dB Sound Level Meter 9.9.0 - Subscription Unlocked

Decibel X is a professional-grade sound level meter app that transforms your iOS device into a precise tool for measuring dBA/dBC levels. The subscription unlock removes limitations, granting full access to all premium features without restrictions.

Key Features Unlocked

• Accurate real-time sound measurements with FFT spectrums
• Noise history data export capabilities
• Apple Watch support for convenient monitoring
• Hearing protection alerts to safeguard your ears

Decibel X is a highly reliable noise meter app designed exclusively for iOS devices, transforming your iPhone or iPad into a professional sound level meter. With pre-calibrated measurements and support for dBA and dBC, it provides precise and accurate sound pressure level (SPL) readings wherever you are. Whether you want to check how quiet your room is or measure the loudness of a rock concert or sporting event, Decibel X is an indispensable tool that combines utility with an engaging user experience.

The app stands out with its exceptional precision, matching the performance of real SPL meters thanks to rigorous testing and pre-calibration across all Apple devices. Its intuitive interface not only caters to professionals but also to anyone curious about sound levels in their environment. With clean, beautifully crafted UI themes including Light, Dark, and Classic, users can choose the visual style that best suits their preferences.

Key Features

• Trusted Accuracy: Calibrated and tested on all Apple devices to ensure measurements match professional SPL meters.
• Apple Watch Support: Monitor noise levels conveniently from your wrist for more flexibility.
• Health App Integration: Seamlessly export noise level data directly into the iOS Health app to keep track of your sound exposure.
• Frequency Weighting Filters: Supports ITU-R 468, A, B, C, and Z filters for tailored sound analysis.
• Smart History Management: Save recordings as history records for future access and analysis.
• Each record can be exported as high-resolution PNG graphs or CSV text files through sharing options.
• iCloud synchronization keeps your history records updated across all your Apple devices.
• Fullscreen mode offers a comprehensive overview of entire history records.
• Dosimeter Compliance: Measurement based on NIOSH and OSHA standards, suitable for occupational noise monitoring.
• Advanced Calibration Options: Includes Linear, Octave 1/1, and 1/3 calibration modes. Profiles can be loaded and saved for repeated use.
• Real-time Audio Analysis: FFT and BAR graphs display live frequency data, with real-time predominant frequency identification—perfect for musical and environmental sound testing.
• InstaDecibel Feature: Capture dB measurements overlaid on photos and easily share with friends and social platforms like Facebook, Instagram, and Messages.
• Live Activity and Dynamic Island Support: Stay informed with noise level updates conveniently at a glance.
• Orientation Flexibility: Supports both portrait and landscape modes for ease of use in any situation.
• User-Friendly Design: Beautiful, intuitive, and meticulously crafted UI that enhances usability and aesthetic appeal.

Additional Features

• Standard Time Weightings: Includes SLOW (500 ms), FAST (200 ms), and IMPULSE (50 ms) response times for various measurement needs.
• MIC Gain Offset: Adjustable from -50 dB to 50 dB to calibrate for specific microphones or environments.
• Measurement Range: Reliable readings from 30 dBA up to 130 dBA covering most common scenarios.
• HISTO Graph: Visualizes the history of recorded sound levels over time.
• WAVE Graph: Features rolling and buffer display modes for dynamic waveform visualization.
• SPECTROGRAPH: Provides detailed spectral analysis in real-time.
• Scale Level Chart: Displays current, average (Leq), and maximum sound levels with clear digital and analog layouts.
• Quick Reference Text: Offers easy comparison of sound levels with real-life examples for user-friendly understanding.

Important Notes

• The app’s standard usable measurement range is from 30 to 130 dBA. Typical quiet rooms usually measure around 30 dBA; readings below this may not be accurate due to limitations of the device microphones.
• While all Apple devices are pre-calibrated, users seeking the highest degree of measurement accuracy are encouraged to perform custom calibration. This requires a calibrated external sound meter as a reference to adjust the trimming calibration within the app.