Which library uses the iPhone application for Roambi to draw graphics?

Question

Does anyone know which library is used in the iPhone Roambi charting application?

http://www.roambi.com/

Answer 1

It seems to use an excellent basic frame structure .

Answer 2

I think this is not the main plot.

There are some diagrams in the application that do not correspond to Core Plot.

Perhaps Roambi started with Core Plot and edited the source, or maybe he developed a new library with Quartz 2D.

Answer 3

The guy who owns the company created Xcelsius, looking at it and knowing about the performance of the main plot, I assume that this guy rolled up his own, highly adapted main plot, to be more efficient or even use the OpenGL library.