Mobile health applications, especially diet, weight, and fitness apps, have become increasingly popular over the years. However, the content and quality of these apps is not well understood. In order to address this, we performed a preliminary content analysis of the diet, weight, and fitness mobile apps on the Google Play Store to better understand the features of such apps. We conducted a descriptive analysis of 159 relevant apps and analyzed the top free 15 for tracked indicators, goal setting, types of input, reminders and notifications, social and community features, and connecting to experts. Based on these preliminary findings, we identify gaps and discuss their importance to future research in this space
