Apps similar to Plus42 include SpeedCrunch, which is free and open source. Other options are Qalculate!, fxSolver, Numbat and Google Calculator. Calculators like Plus42 are a crowded field, with more than 50 alternatives for Windows, Android, Mac, Linux and the web.
A calculator with syntax highlighting that supports user-defined variables and functions, math-like syntax, and some more advanced operations such as derivation and integration (estimate), and complex numbers.
Hungary
EU
CalcTape is a revolutionary new kind of pocket calculator. With CalcTape, also extensive calculations remain clearly structured. CalcTape makes the arithmetic process visible - you can generate intermediate results and subsequently correct or change all numbers and operations.
GermanyEU
With MyScript Calculator, perform mathematical operations naturally using your handwriting.
FranceEU
A graphical scientific calculator that is easy to use and has some advanced functionality such as vector arithmetic and variable solving.
handyCalc is a powerful calculator with automatic suggestion and solving which makes it easier to learn and use.
A kickass, open-source calculator that lets you do calculations and unit conversions naturally, with features like:
Programmable scientific calculator which has more than 150 mathematical functions and all of them return as many digits as you need. It can calculate with real numbers, complex numbers, fractions, vectors, matrices. Commands if, goto and print can be used to create scripts.
CzechiaEU
Sicyon is an all-in-one scientific calculator for every student or professor, researcher or developer - everybody doing physics or chemistry / science or engineering using formulas and tables of constants.
HEXelon MAX is a science calculator. It solves math expressions like: Sin(Pi)-Root(-8;3)+3. Exchange rates table and currency converter are update from Internet by one click. Units converter makes easier to convert various units,14 categories of units: length, temperature...
PolandEU
A calculator for Android.
Algebraic entry. Full on-screen history (multi-line display). Use your phone's keyboard or on-screen buttons. Usual functions: trig, log, etc. Parentheses. Copy to clipboard.
United Kingdom
Console Calculator is a powerful calculator with a simple console interface. This calculator supports many built-in mathematical functions, remembers recent entries, supports creation of user defined variables and custom functions.
United States
