Additionally a tape-calculator like log keeps track of all results allowing to quickly reuse any previous result.

KoolCalc has been designed be small, easy to use, supporting everyday needs, and easy to be customized in upcoming versions.

But several shortcomings even compared to normal desktop Windows calculator...
- trig is in radians only!
- no hex mode
- no automatic constant.

(This last deficiency is however common to most calculator programs (and even the Windows calc only has a half-functional constant) which leads me to conclude that people who write calculator programs have, unbelievable though it seems, never seriously used a real calculator!!!!! (Wake up guys! An automatic constant has been a fundamental feature of every electronic calculator made since the mid-1970's!)