Workout Tools mobile app offers the most popular features of ExRx.net including exercise library (internet connection required) and weight room calculators (works off-line). Use Workout Tools as a stand-alone app or alongside your favorite notes or todo app, workout app, or shareable online document or spreadsheet app. It includes the following components and features: Exercise Database • Free edition provides a 1000 exercises • Premium edition offers over 2000 exercises • View images, videos,