- The investigators will recruit persons (index parent) who meet the following criteria: a) self-identified Latino adult; b) obese (BMI 30-39.9kg/m2); c)not currently enrolled in a formal weight loss program or taking weight loss medications; d) no restriction for PA (i.e., no significant physical disability); e) having a smart phone;f) speaks and reads English; g) one child aged 8-17 (with no regard to obesity status) residing with the parent full-time and willing to participate; and h) receiving care at a study clinic.