Reor is a free calculator with a surprising amount of features and functionality.

Wordify 2’s all-new streamlined User Interface is super easy to use, it's beautiful and it lets you work efficiently and fast. We have always designed Wordify with simplicity in mind. Wordify 2 builds on that legacy and sports an entirely new user interface that is streamlined & powerful.

The program opens with the most basic of interfaces: numbers, four operators, '=', 'C' - even the most math-challenged will feel at home immediately.

Tap the menu, though, and a vast number of other modes appears on a full-screen display. In a click you can view Scientific, statistical or financial functions, a graphical plotter, lists of physical and mathematical constants, a mortgage payment calculator, unit converter and more.

Unlike many other calculators, the core interface doesn't rework itself to suit the new mode. Switching to Scientific mode, say, just gets you a separate dialog with buttons like 'cos', 'sin' and 'tan' which you select as required.

There are also some unexpected extras. A 'wordify' function presents your currently-displayed value as words, for example, while a full History view gives you access to all the calculations you've performed so far.

Reor's interface is occasionally annoying. Does the main menu really have to display full-screen, on top of every other application? But it's a capable calculator, worth a look if you've outgrown Windows' own offering.

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