Calccis vs BVCalc Lite

Calccis is a reverse polish notation (RPN) calculator. It supports basic arithmetic, trigonometrical, logarithm and exponent calculations for real, fractional, and complex numbers. Degrees and radians can be used for trigonometrical functions. You can perform matrix calculations, too. There is an undo stack, which supports undoing and redoing the 100 latest operations. Calccis does not copy or mimic any existing physical calculators. However, the operation of the stack has been influenced by how the stack works in the 1990s Hewlett-Packard HP-48 family of calculators.

Calculate with confidence. BVCalc Lite combines live-updating algebraic entry with an RPN stack that shows the full expression behind every value. Reuse past work with a tap, switch modes anytime, and audit every step. Upgrade to BVCalc to unlock • Unlimited history tape & memory (Lite supports up to 2 items in memory and 4 calculations in the history tape) • Additional color theme & settings • No helper popups on scientific keys • Full external-keyboard letter shortcuts Core features in Lite • Live result as you type — no “=” key • Reuse expressions from the tape/stack, not just values • Shared tape/stack with readable infix history • Switch between Algebraic ↔ RPN mid-calculation • Touch-friendly stack gestures (tap to swap/roll) • Basic & Scientific keyboards; copy/paste; edit history • Color-coded parentheses, themes, high-contrast mode • Memory for reusable snippets • No ads BVCalc Lite makes partial-step workflows fast and reliable: what you see is the math you actually entered.