Sites and apps similar to ThinkCalculator include Wolfram Alpha, which has a free version. Other options are SpeedCrunch, Fossify Calculator, Qalculate! and Mathematica. There's no shortage of Calculators like ThinkCalculator, with more than 50 alternatives for Android, Mac, Windows, Linux and iPhone.
Wolfram Alpha is a "Computational Knowledge Engine" - different from a search engine, it answers factual queries directly by computing the answer from structured data, rather than providing a list of documents or web pages that might contain the answer.
United States
SpeedCrunch is a free, fast, high precision open source algebraic calculator with an intuitive interface and many features, such as variables, syntax highlighting, functions, persistent input history & more.
Germany
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Introducing Fossify Calculator – your versatile and efficient tool for all your calculation needs. Enjoy a stylish, modern design paired with powerful functionality, perfect for both simple calculations and more complex tasks like currency conversion.
India
Qalculate! is a multi-purpose cross-platform desktop calculator. It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation).
SwedenEU
Definitive technical computing system spanning machine learning and neural networks, data science, visualizations and much more.
United States
Fully offline Android calculator app for power users with variable support, syntax highlighting, file-based sessions, and more.
Online math solver, equation editor and database, graphing calculator and science/engineering problem helper.
GermanyEU
Free online scientific calculator from GeoGebra: perform calculations with fractions, statistics and exponential functions, logarithms, trigonometry and much more!
AustriaEU
Your ultimate collection of 100+ free online tools, designed to simplify everyday tasks in seconds. Fast, smart, and easy to use.
Calculator provides simple and advanced mathematical functions in a beautifully designed app.
United States
A simple yet powerful calculator that includes standard, scientific, and programmer modes, as well as a unit converter. It's the perfect tool to add up a bill, convert measurements in a recipe or other project, or complete complex math, algebra, or geometry problems.
United States
