Back Key End Call is described as 'END CALL with your phone's Back Button! Fastest way to HANG UP a call!'. There are three alternatives to Back Key End Call for a variety of platforms, including Mac, iPad, Windows, Online / Web-based and Android. The best alternative is TextNow, which is free. Other great apps like Back Key End Call are Textnow.com (Free) and Calorie Calculator (Paid).
Calorie Calculator is based on the Mifflin - St Jeor equation because is the most accurate. To determine your daily calorie amount you need: Enter your current weight, age, height, and gender into the calculator. Do your best estimate of how much exercise you will be doing.