Maybe not the best place to ask, this might not even be the right section, but it is kind of music related.
It's more of a graphic design question. I'm looking for an app for iPad that will turn my freehand wobbly curves, lines and shapes into neat looking curves and lines. It's for my PhD thesis. I've been studying a concept called Spectromorphology, which is a way of analysing the sonic footprint of a sound as it manifests in time. I've got freehand sketches that I want to convert so they look professional.
Similar to the ones in the photo attached.
Suggestions would be most welcome, thank you.