WeighMI is an Android application designed for individuals focused on health and fitness, specifically for tracking weight and calculating Body Mass Index (BMI). It features a precise BMI calculator that accommodates various units of measurement for weight and height, and it adheres to recognized scientific standards for classification. Users can document their weight history, providing insights into their long-term health trends through advanced visualization tools such as BMI curve graphs and detailed bar charts. The app emphasizes user privacy by storing all data locally on the device, ensuring that personal health information remains secure.

In addition to its core functionalities, WeighMI offers an option for users to enhance their experience through a one-time in-app purchase, allowing for ad-free tracking and unlimited data entries. The application presents a modern design that caters to user preferences, offering both dark and light modes. Each record includes comprehensive details such as weight, height, age, gender, and timestamps, making it easy to maintain an organized health journal.