TrackBMR helps you to calculate your basic metabolism rate and required calories in term of TDEE( total daily energy efficiency). You can enter weight in KG or LBS and height in cm or inches. It allows you to set defaults in settings section. For how to use please go through Help section of application. You can save readings, edit them, remove saved reading ( Please See Full Version).
Get Pro Version for just a buck and with more functionality like saving history.