If you are an engineer or scientist, or anyone in search of a full function scientific calculator/plotter/symbolic manipulator, you've found your iPhone dream app. It matches or exceeeds an HP-50g or Ti-89 for pure functionality, yet is offered for a fraction of the cost. I applaud the programming team for developing an extraordinary little program, and for making it available to a broader community. Adjust the language, microphone source, and choose other keyboard shortcuts. Look for the Dictation section and click on the toggle button to turn it on. That it offers everything a conventional scientific calculator does plus a full suite of symbolic algebra functionality is a rich frosting on the cake. Scroll down and select the Keyboard menu. It would arguably be worth the "price of admission" if all it offered was its graphing capabilities and nothing else. To compare it to a "calculator" is somewhat like comparing a racing car to a road bike. Now its here and available! It is a programming tour-de-force, and really does provide a substantial subset of the functionality of desktop powerhouses like Mathematica and Maple. A wxWidgets-based project aimed to make math-typing, plotting and symbolic math easier user can easily input, plot and save/load math data in various formats (e.g. Application also contains integrated mathematical reference book. I lamented its absence from the iPhone ever since. It provides numerous computing features and rich user interface translated into about 40 different languages. R is free and open source software, allowing anyone to use and, importantly, to modify it. I regretted nothing about moving to an iPhone except having to give up my one truly indispensible application on the PocketPC, namely SpaceTime. Because R is open source, unlike closed source software, it has been reviewed by many internationally renowned statisticians and computational scientists. I used to own a Pocket PC (before it was stolen and I moved to an iPhone).
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