If you are a first time you dont have to buy it with the app. Installed right away: External Dimensions (W x H x D): 16.1 x 9.3 inches (410 x 246 x 238 mm); Weight: Approx. 15.3 lbs (6.6 kg) (1 piece); 4 inch (12 cm) cone shape; 3.0 inches (2.7 cm) balance dome; 3-way speaker reflex system; Impedance frequency band 4 inches (8 inches (8 cm); Maximum input 0,000 Hz