IPad 7 design software

[Thumper369]

Funny, I just posted something similar to this but my question was more specific. There is some good suggestions over there.

iPad App for Drawing Single lines in SVG files

Looking for an iPad app that we can draw with where the drawn lines are not fill but actual single lines. We have tried a few but seem to consistently be having the problem that they are filled shapes. Any idea/links/search suggestions would be most welcome.

More Details

iPad Pro w/ apple pencil Paid ok but would prefer not to have any subscriptions output should be SVG Windows apps with the same criteria would be ok as a second choice