Ignition Timing in 3D

Here are pictures of the user interfaces I have used in the past concerning ignition timing settings.

The first is a bluetooth wireless using my android cell phone.

The second is an application used on my PC via USB cable.

Both incorporate two 2D RPM and MAP advance curves with a third 2D curve that enable a total timing limit vs RPM. It approaches 3D capability, but is easier for those experienced with standard distributors.