RPN Comp Calc vs Calculator+ Simple Math

A serious RPN calculator with a four-level stack, built the way HP taught us: ENTER, then operate. No equals key, no parentheses, no ceremony. Full scientific keyboard: trig and inverse trig (2nd key), hyperbolic functions and their inverses, logs and exponentials in every base you actually use, powers and roots, factorial and gamma, plus a curated screen of twelve physical constants (CODATA/SI-2019) one tap away. Then the part most calculators skip: a true complex-number mode. Flip to CPX and every register holds a complex value. Enter real and imaginary parts directly, see results in rectangular or polar form (r ∠ θ), and use exp, log, powers, trig and hyperbolics across the complex domain with principal-value conventions. Degrees or radians, honored everywhere. Designed for people who think in stacks: classic stack lift, roll, swap and drop; a live four-register display so you always see T, Z, Y and X; degree/radian and fixed/scientific display toggles; haptic keys. No ads. No accounts. No tracking. No network access at all. Your calculator is yours.

Calculator+ is a clean, fast calculator for everyday math. It is built to feel simple, trustworthy, and lightweight, with no account, no ads, and no cloud dependency. Use it for quick totals, homework checks, shopping math, percentages, decimals, and more capable calculations when you need them. Calculator+ keeps the focus on the calculation, with a modern interface that works well in light or dark mode. Features: - Basic arithmetic: addition, subtraction, multiplication, and division - Correct operator precedence for natural expressions - Parentheses, decimals, percent, sign toggle, and backspace - Local calculation history you can reuse - Scientific mode with sin, cos, tan, square root, powers, logarithms, pi, and e - Light, dark, and system appearance modes - Haptic feedback setting - Local-first design with no account required Calculator+ is designed as a premium everyday utility: calm, readable, responsive, and private by default.