(Click to enlarge). I had a wild idea that it might be nice to plot spots in 3D with x for time, y for SNR, and depth for distance away. This 3D plot is in the latest version:
On an iPhone or iPad you can rotate and zoom the 3D plot and I have to say I'm impressed with how fast Apple's SceneKit framework is at rendering 3D data.
My thanks to the beta testers and for encouraging emails during development.