Calcularis: The only scientific calculator you will ever need.
A history feature will allow you to save as many equations as you need and allow you to retrieve them when needed or edit them. No need to press the = button because Calcularis is always calculating.
The full equation with multiple lines makes it easy to keep track of what your are calculating. All the standard scientific functions are on visible keys. There is a scientific and engineering notation mode as well.
Simply the the best free scientific calculator on the market.
The paid mode has the following additional features:
* applications such as Tip and split calculator, Loan calculator, math equations like quadratic equation.
* large set of constants
* unit conversions
* more functions accessed from the FN button
* more key layouts such as a 10 Key and Programmer/logical calculator accessed from the KEYS button
During the trial period (two weeks), you can use the features of the paid mode to try them out. After the trial period, the main features of the calculator will continue to work and will remain free.
Some have asked the question whether you still need your TI, HP, Casio or Sharp calculators. The answer is yes. Phones are not usually allowed in the classroom or in testing centers. You will always need your old calculator for that. Plus calculators like TI-83, TI-84, TI-89 and TI-Nspire include graphing capability that is not currently supported.