Provided are an information terminal, an information processing method, a non-transitory computer readable recording medium storing an information processing program, and an information processing system capable of reducing time and effort of a user related to rental of an imaging-equipment. An information terminal includes an acquisition unit that acquires equipment information regarding imaging equipments including specification information for respectively specifying the imaging equipments, a determination unit that determines that the imaging-equipment which is not connected to an imaging device is rentable, and determines that the imaging-equipment which is already connected to an imaging device is not rentable among the imaging equipments indicated by the specification information included in the equipment information acquired by the acquisition unit, and a transmission unit that transmits the specification information, determination result information indicating a determination result performed by the determination unit, and owner information indicating an owner of the imaging-equipment to an external device.