The mLife study aims to help people to lose weight while using different digital technologies for self-monitoring diet, physical activity and body weight. The intervention will last 12 months, and you will be asked to daily track all your meals via the mLife app, use a FitBit to track your physical activity, and use a FitBit scale to track your weight. Also, you will be expected to listen to 2 podcasts weekly and read an in-app tip of the day, these will provide you with information about healthy eating and strategies to stay active. The mLife app will also encourage and facilitate social support among fellow participants. You will be assigned to two versions of the app. Both are the same, but how the data are presented to you will be different. Additionally, at the beginning of the study, and again at 6 and 12 months of the intervention, we will ask you to complete some online surveys.