Decibel：Sound Meter vs Db

Decibel：Sound Meter is an app that can provide real-time decibel data, with the following features: -High precision measurement, real-time measurement -Provide location -Real time decibel camera -Provide detailed measurement reports -One click sharing of measurement data -Support for exporting audio data I Payment: The user deducts the payment through their iTunes account and makes the payment upon confirmation of purchase II Renewal: The user's iTunes account will be charged within 24 hours before expiration, increasing the corresponding subscription period III Cancel Renewal: To cancel the renewal, go to "iTunes Store and App Store" ->click on "App ID" to enter the "Account Settings" page, click on "Subscription", and choose to unsubscribe IV Privacy Agreement: https://docs.qq.com/doc/DVURkSmJKSll0dXBW 5、 Terms of Use: https://docs.qq.com/doc/DVXB3TWtxSUt2Rk1R

Db is a simple sound-level meter designed for quick, clear listening checks. See the current level, session maximum and a highly responsive waveform at a glance. Choose A, C or Z frequency weighting, switch between Fast and Slow response, and use the visual threshold guidance to recognise when hearing protection may be appropriate. Db includes a persistent calibration trim for comparison with a trusted reference meter. It requires no account, contains no advertising and keeps microphone analysis on your iPhone. Audio is analysed live and is never recorded, stored or transmitted. Db is intended as a practical listening guide. It is not a certified occupational, medical or regulatory measurement instrument.