I’ve decided that the app will be available free for the first week of its existence. After the first week, the free version will be removed from the Android Marketplace, and Algebraic will cost 99¢.
I’m thinking that there might also be a possibility of releasing a free version that remains free, but I don’t know which one or two of the (currently 4) features should be included. You can vote for the one or two features that will remain available for free in this poll.
Anyway, enough with pricing – Let’s get to features:
Wow, that was hard, wasn’t it?
By default, it will render the graph from (-10, -10) to (10, 10), but you can drag the graph around and zoom in and out (the zooming buttons appear when you’re dragging the graph).
Of course, the graph above isn’t of the best quality, but there’s good reason for that. When you drag, zoom, or change the equation, the graph goes into low quality mode. This lets it render faster while you’re making changes.
There’s a snapshot of a zoomed in and a zoomed out graph. If you get lost when you’re navigating around the graph, double tap to re-center the view.
When you click the equals sign, the view flips to this one, where you can choose between decimal and fraction answers. The calculator makes an intelligent decision as to which one should be the initial view (basically, if you included decimals in your input, the default output is a decimal), but you can flip back and forth by clicking the buttons.