InerziaSmartCalc supports virtually every mathematical expression written in natural language. You just have to start writing!
InerziaSmartCalc runs in your task bar patiently waiting for you to open it. Whatever you're doing, whatever app is in foreground, you're just a click away from a fully functional calculator.
Almost 10MB of RAM and an average of 1% of CPU usage, while you're using the calculator. And when it's closed, it's completely stopped. These are facts: you can run any app, without worrying of InerziaSmartCalc.