Version 1.11.3

I just uploaded version 1.11.3 to Google Play.  This adds peak and trough readings to graph.  It also fixes some bugs.

There are are few more things that I wan't to add to graphing in the next update or two.

1. Asymptote reading.
2. Logarithmic scaling.
3. Display reading points on traces when the down arrow is hit to hide the reading tab.  Just like markers will draw their position when the readings tab is hidden, other readings will also show their location and reading on traces when the readings tab is hidden.

Small Update

There will be a small update this weekend.  This update will remove the help page and add a short tutorial in the app.  There will also be some bug fixes.

Version 1.11

Version 1.11 is now live on Google Play.  This removes the "y=" from the graph equations so you can now graph inverse functions, circles, hyperbola, and more.  Also this adds polar and parametric graphing to the paid version.

Graph Improvements

I am working on improving graphing for the next update.  Currently, you are forced to enter equations in the format y=...  In the next update this will change.  The "y=" part will be removed so you are free to enter equations such as x^2+y^2=1 to draw a circle.  You can also enter equations to draw ellipses, hyperbola, and inverse functions.  For example, you could graph y=x^2-2x+1 and then graph the inverse at the same time by swapping x and y to graph x=y^2-2y+1.

In addition, there will be some improvement to how the traces are drawn.  For example, when you currently graph y=tan(x) and zoom out far enough, you will not see y go to + and - infinity when x=pi/2.  Instead the trace will just stop at a random y value and the start again at some -y value.  This will be fixed and now y=tan(x) will always be drawn off the top and bottom of the screen when x=pi/2.

I am also working to add the ability to graph parametric equations and polar coordinates to the paid version.

Version 1.10

Version 1.10 is now available on Google Play.  This adds copy/paste, option to clear history, and fixes some crashes.

Copy and Paste

The next release will add the ability to copy and paste expressions.  You will be able to long click on expressions in the history on the calculator to select them.  You can then adjust the selection similar to how selections work in a text entry in android.  Finally, there will be copy, cut, and paste buttons to be able to copy/cut the selection and then paste it into the calculator entry or graph equations entry.

Version 1.9

Version 1.9 has been released!  This adds user defined functions, inequalities, bitwise operators and memory!  Also a new tutorial was added for user defined functions and memory.