Plus42 vs CueCalc

Plus42 is an advanced scientific programmable calculator, based on Free42. Free42, in turn, is a complete re-implementation of the HP-42S scientific programmable RPN calculator, which was made from 1988 until 1995 by Hewlett-Packard. Free42 is a complete rewrite and contains no HP code whatsoever. Plus42 builds on Free42 and adds: Algebraic expressions modeled after those used on the HP-27S and HP-17B/19B; attached units and unit conversions modeled after those used on the HP-48/49/50 series; directories for more organized storage of programs and variables; a larger display, with 8 rows and 22 columns (131x64 pixels) by default, which the user may resize at will; time value of money and amortization schedules; and two-dimensional plotting of functions, with ability to zoom and pan, and find integrals and roots from points in the plot.

CueCalc is a powerful, precision calculator designed for people who calculate the same things repeatedly, and want a smarter, faster way to do it. THE CALCULATOR, REIMAGINED Full-featured scientific calculator with arbitrary-precision math, step-by-step solution breakdowns, and a result display that scales automatically to any number size. Perfect for everyday arithmetic, scientific work, or complex multi-step problems. CUES: SAVE YOUR FORMULAS FOREVER Build Cues for any calculation you repeat: loan payments, material quantities, BMI, fitness macros, profit margins, tip splits, or anything you define. Each Cue stores your formula and variables. You fill in the numbers, CueCalc does the rest. Save Cues into Cue collections and access them instantly from the Quick Access Bar. STEP-BY-STEP SOLUTIONS Tap equals and see not just the answer, but every step that leads to it. Perfect for verifying work, understanding expressions, or catching errors in complex problems. CAMERA SCANNER Point your camera at a printed equation or handwritten math. CueCalc reads fractions, exponents, square roots, and multi-term expressions, then loads them directly into the calculator. SMART HISTORY Every calculation is automatically logged. Cue history tracks every Cue run, so your work is always retrievable. Export your full history as CSV, or generate a detailed Cue report as PDF. HOME SCREEN & LOCK SCREEN WIDGETS The Cue Tracker Widget brings your most-used Cue results to your Home Screen or Lock Screen. Key numbers stay visible at a glance, without opening the app. CUSTOM KEYBOARD EXTENSION Install the CueCalc keyboard and get instant math inside any app on your iPhone or iPad. UNIT CONVERSIONS Dozens of built-in conversion categories: length, weight, temperature, speed, volume, area, and more. Convert mid-calculation without breaking your flow. GRAPH PLOTTER Type any function and see it rendered instantly in a clean, zoomable graph. THEMES 30+ themes, from clean clinical white to deep midnight dark. Six themes are included free; the full collection unlocks with Pro. Choose the look that fits your workflow. CUECALC PRO Unlock the complete experience: · Unlimited and custom Cues · Full calculation history · All premium themes · Custom keyboard extension · Graph plotter · CSV and PDF exports · Home Screen and Lock Screen widgets Monthly (free one-week trial), Yearly (best value, free trial included), or Lifetime. One purchase covering all future Pro features. No ads. No data collection. Your calculations stay on your device. ——— Privacy Policy: https://cuecalc.app/privacy Terms of Use (EULA): https://cuecalc.app/terms CueCalc Pro is available as an auto-renewing subscription — Monthly or Yearly — or as a one-time Lifetime purchase. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel anytime in Settings > Apple Account > Subscriptions.