*** Decibel Level Table*** 0-20dB is very quiet and almost impossible to feel 20-40dB Quiet, Soft Talk 40-60dB Normal, ordinary indoor talking 60-70dB noise, speak loudly "70-90dB is noisy and damages nerve cells" = "70-90dB is noisy and damages nerve cells"; "90-120dB extremely noisy, injuried hearing" = "90-120dB extremely noisy, injuring hearing"; ***App Features*** - No advertising, no in-app purchase information, safe and secure use - High-precision measurement, real-time measurement - Provide location information measurement - Provide detailed measurement report - Simple design, one-click measurement ***Description*** We have developed more accurate measurement methods than other applications on the market, but we still cannot completely replace professional equipment. The measurement data is for reference only. You may purchase an auto-renewing subscription through an In-App Purchase. • Auto-renewable subscription • 1 year ($ 10.49) durations • Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and / or turn off auto-renewal by visiting your iTunes Account Settings after purchase • Privacy policy and terms of use: ( privacy policy: https://gist.githubusercontent.com/jerryga/4052426fdedb0cc5351cb5384fd2e1f0/raw/privacy.html terms of use: https://gist.githubusercontent.com/jerryga/39edfb5f074fd24b263d5f2c8b524b58/raw/20bac3fb9fa834602bcac9eb280c1e7a65eb14a0/use.html )