AGB Oil PB Calc - application allowing to compute inplace and recoverable oil volumes using probabilistic computation method. If GOR parameter specified - one could compute volume of gas dissolved in oil. Geologic risk factor coefficient also support by this application. Two algorithms supported: one used in Russia / exUSSR and second one standard international algorithm. Flexible support for various input values units. Application distributed as Freeware, no built-in Ads, no special permissions required from Android OS. Interface and help files available in English and Russian languages.