BMR Calculator is a free iPhone app developed by Uncanny Apps LLC. It falls under the Lifestyle category and specifically the Health & Fitness subcategory. The app allows users to calculate their body's Basal Metabolic Rate (BMR), which helps determine the number of calories one should consume each day.

With its simple and easy-to-use interface, BMR Calculator guides users through entering their height, weight, age, and gender to provide an accurate BMR estimation. BMR, or Basal Metabolic Rate, is the number of calories the body would burn while at rest for a full day. By knowing one's BMR, users can better understand their daily caloric needs.

The app also offers the ability to explore how different activity levels and the BMR value impact the recommended daily calorie intake. These calculations are based on the widely used Harris Benedict Equation, ensuring accuracy and reliability.