This app turns your iOS device into a professional sound level meter, detects halmful environmental noises, and helps protect your hearing and health.

"Decibel X" is one of very few noise meter apps on the market that has highly reliable, pre-calibrated measurements and supports dBA, dBC. It turns your iOS device into a professional sound level meter, precisely measures the sound pressure level (SPL) all around you. This extremely useful and beautiful tool will not only be a great tool for many uses but also bring you a lot of fun. Have you wondered how quiet is your room or how loud is a rock concert or sport event? "Decibel X" will help you answer all of those.

WHAT MAKE IT GREAT AND STAND OUT FROM OTHER APPS:

• Trusted accuracy: the app is tested and pre calibrated for all Apple devices. The precision is matching with real SPL devices
• Apple Watch support: see noise level right from your wrist
• Health App integration: export noise levels directly into Health app.
• Frequency weighting filters: ITU-R 468, A, B, C, Z
• Powerful, smart history data management:
• + Recording data can be saved into a list of history records for future access and analysis
• Each record can be exported as hi-res PNG graph or CSV text via sharing services
• iCloud support which synchronize all history records across your Apple devices
• Fullscreen mode to give overview the whole history of an record
• Dosimeter with NIOSH, OSHA standards
• FFT and BAR graphs to display real time FFT. Those are very useful for frequency analysis and musical tests. Real time predominant frequency is also displayed.
• WAVE graph with 2 display modes: Rolling and Buffer
• InstaDecibel to capture your dB report overlaid on photos and easily shared via popular social networks (Facebook, Instagram, Messages, etc.).
• Support both Portrait and Landscape layouts
• Beautiful, intuitive and carefully crafted UI design
• Optimized for iOS 11