BOD Keeper Free is a lifestyle app designed for iPhone users to easily track body measurements and calculate body fat levels. The app allows users to input weight, waist size, and other body measurements to automatically calculate body fat percentage. Results are displayed in a table format and diagrams for convenient tracking over time.

With BOD Keeper Free, users can save measurements for weight, body fat, fat-free mass, and BMI, along with various body parts like waist, arms, chest, and more. The app supports both Imperial and Metric units, offers insightful diagrams for tracking progress, and allows customization of displayed measurements in the results table. Users can store up to 10 measurements for free.

For enhanced features, users can upgrade to BOD Keeper Basic via in-app purchase for unlimited measurements, result exports to csv files, email sharing, and an ad-free experience. Further, upgrading to BOD Keeper Pro offers additional functionalities like adding photos to measurements, creating a gallery, and photo sharing options.