New mobile application, RAUSSA (Rheumatoid Arthritis Ultrasound Scoring Synovitis Atlas), with the aim of improving and facilitating the diagnosis and monitoring of rheumatoid arthritis. It consists of an interactive atlas where ultrasound images showing the grading of synovitis and tenosynovitis in different joints, both in grayscale and Doppler mode, can be consulted during the patient’s examination.