I am looking for programs to draw charts/curves, as we can do it in Excel or Powerpoint. My requirements are:
- Main focus is on graphics rather than data. It can be a symbolic curve without real data. It is useful to draw the curve with a freehand tool, then normalized by the software.
- It must be eye-catching graphs, well-designed and colorful wish shines and shades.
- Easy to use with ready options. I need to draw lots of graphs quickly.
- can be Windows or Mac (or even Linux), in order of preference
- price is not important if it is in a reasonable range
This is for a business, not personal.