As the title says it's a scientific calculator for the 3DS that prints the formula you're typing in a way similar to c*sio Graph35, or at least tries to be similar.
In my opinion it has pretty much all you could want, but feel free to request more features or improvements !
The .3dsx can be downloaded in the releases, and instructions are in the ReadMe so give it a quick read
Hopefully you find it neat, and if you encounter any bug you can reproduce please do report it!