It is a 3 in 1 digital scales app that has real digital scales, visual digital scales and a fake / prank digital scales. The accuracy depends on how you use the app and the way you balance your phone. Has a built in stabilization engine to give steady readings too. Digital Scales: Real accurate digital scales that works using your phones sensors. Visual Scales: Uses your phones camera to calculate weight of larger objects Fake / Prank Scales: Prank your friends with predefined weight readings, very simple to use and realistic looking simulated readings.