Shipbucket

Greetings

Bar an introduction this is my first post.

One had intended to start some drawings on my PC, which are now long stalled. Time to sit at the machine has dwindled away to virtually nothing.
While I can find time, it's only going to be using my smartphone which comes with a lovely stylus.
So my request for advice concerns what software would one recommend for producing Shipbucket drawings on such a smartphone?