App and Body Fat Scale in the Management of Overweight Patients

This study tests whether using a smartphone health app and a smart body fat scale helps overweight or obese adults who have bipolar disorder or schizophrenia — and are on antipsychotic medications — lose weight and improve their health. **You may be eligible if...** - You are between 18 and 60 years old - You have bipolar disorder or schizophrenia that is currently stable or in remission - You are taking at least one antipsychotic or mood-stabilizing medication - Your BMI is 24 or higher (overweight or obese) - You are comfortable using a smartphone and digital apps **You may NOT be eligible if...** - You are already trying to lose weight through dieting, medication, or surgery - You have lost more than 7% of your body weight in the past 6 months - You weigh more than 150 kg - You have obesity caused by another medical condition (e.g., thyroid disease, Cushing syndrome) - You are pregnant, breastfeeding, or recently gave birth - You have chest pain or serious medical conditions that prevent physical activity Talk to your doctor to see if this trial is right for you.