If you are searching for a simple app to track your temperature, weight, and heart rate, then the Free Body Temperature Check Diary: Thermometer Fever Checker App is just what you need. 

All you need to do is simply enter your basic information, then you will be able to view the values of these parameters in real-time. The main advantage of this app is that you can enter your data in a very simple and easy way. The user can simply choose to enter the value in Celsius or Fahrenheit, and the app will automatically convert it to the desired scale. 

This app is also a perfect tool for people who are looking to lose weight, as it can be used to view your current weight and BMI and track your weight over time. This can also be used to set reminders so that you can keep track of your temperature, heart rate, and weight. You can also add notes regarding the pills you took at the time.