The application can be either Static & Dynamic or Both, and testing of these applications requires a different approach as given.
CyRAACS™ Specializes in Application Testing which includes Offensive Security Testing (VAPT), Application Code review... CyRAACS™ has to date conducted more than 2000+ Application testing for their clients.
Reach out to CyRAACS™ at www.cyraacs.com to know more.