TTCalc is described as 'Open source bignum mathematical calculator. It features arithmetical functions, trigonometric functions, inverse trigonometric functions, hyperbolic functions, inverse hyperbolic functions, logical operators, logarithms, functions for converting between degrees and' and is a Calculator in the education & reference category. There are more than 50 alternatives to TTCalc for a variety of platforms, including Windows, Android, iPhone, Mac and iPad apps. The best TTCalc alternative is SpeedCrunch, which is both free and Open Source. Other great apps like TTCalc are Qalculate!, Numi, GeoGebra Scientific Calculator and Soulver.
Kalk is a convergent calculator application built with the Kirigami framework. Although it is mainly targeted for mobile Linux platforms, it can also be used on the desktop.
Germany
EU
Hissab is a simple and intuitive calculator, unit-convertor and productivity application.
NumWorks designed an intuitive and evolutive graphing calculator to make learning maths easier.
FranceEU
Omni Calculator is a web/mobile calculator that solves concrete problems such as mortgage payment, gross margin, body mass index, break-even point, etc. It's very user-friendly, flexible and usable on web, mobile and as an embeddable web widget.
PolandEU
HungaryEU
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
A Simple but elegant Calculator app made with Flutter using Google's Material Design with Currency (Exchange Rate) and Unit Converter.
With MyScript Calculator, perform mathematical operations naturally using your handwriting.
FranceEU
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:
Calculator-inator is a Calculator & Converter for Android inspired from Google Calculator
Calzy is a beautiful modern calculator for your everyday use. It helps you perform your day to day mathematical calculation in a more elegant way.
India
