We will ask you to complete 3 study visits over the course of 12 months. Home study visits are an option! Participants are randomly assigned to 1 of 2 groups (you can’t choose which group). One group gets a smartphone app and digital body weight scale that will send personal messages to encourage healthy habits. The other group continues with standard of care, which consists of referral to a local diabetes prevention program (in-person or video-conference). We will ask you to wear a physical activity tracking device (Actigraph) on your wrist for 7 consecutive days once per month.