ANDAR is a multiplatform application (Web, iPhone and iPAD) developed in spanish language designed to help rheumatoid arthritis patients to control their disease through which you can fill different validated questionnaires for the evolution follow-up of rheumatoid arthritis. Also you can keep track and control of medications, to set alerts, keep a patient diary, enter appointments with your doctor, etc. .. The tool also offers a version for healthcare professionals that allows them to track their patients.