Diets to Gain Weight is an Android application designed by STR LABS that helps you follow a diet plan to gain weight. The app provides various diet plans of different durations and characteristics, along with a shopping list of ingredients required for the diet. The app also features calculators to determine your ideal weight, body mass index (BMI), and daily energy consumption.

One of the unique features of this app is the ability to save your weight on a graph, allowing you to track your progress and stay motivated. The app also offers the option to communicate with friends and receive notifications at meal times. The app is available in English and is free to use.