DB-Decibel sound level meter

An app that can provide real-time distributed data, with the following features: -High precision measurement, real-time measurement -Provide location information for measurement -Provide detailed measurement reports -One click sharing of measurement data -Support exporting audio data -Minimalist design, one click measurement -Supporting decibel meter 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 "App ID", go to the "Account Settings" page, click "Subscription", and select unsubscribe IV Privacy Agreement: https://docs.qq.com/doc/DVGVuV3BPSnFieEhl V、 Terms of Use: https://docs.qq.com/doc/DVEtuRkJ1bGxoR3RS