Decibel is the perfect app to evaluate the noise around you : measure the sound pressure, see the spectrum variation, and then compare your recording to the reference chart included in the app. Is it similar to a normal conversation ? a diesel truck? a rocket launch ? Figure it out ! Calibrated professionally, It supports dBa, dBb, dBc and dBz, for a customized and highly reliable recording. One of the most complete app for your sound measurements! You can save an history of your recording and spectrum - keep track of your last actions ! KEY FEATURES measure accurately the sound pressure around you supports dBa, dBb, dBc and dBz recordings and spectrum can be saved detailed reference chart to compare your measurements unlimited recordings unique and intuitive interface SUBSCRIPTION INFORMATION - Subscribe for unlimited access to our Premium pack and special features - Monthly subscription ($4.49) / Yearly subscription ($16.99) - Free trial subscription is automatically renewed unless cancelled 24 hours before the renewal - Payment will be charged to iTunes Account at confirmation of purchase - Account will be charged for renewal within 24-hours prior to the end of the current period, at the same price - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Privacy Policy & Terms of Service: http://musicworldmedia.com/products/decibel/tos *Price are equal to the value that "Apple's App Store Matrix" determines is the equivalent of the subscription price in $USD.