Hi @philjord. thank your this Android app! Just came across it a couple of weeks ago while looking for alternatives on 2 similar apps I had been using for more than a year because i found those 2 apps lacking on features I needed.

I don't have a laptop, just an Android tablet. And I never used ...

You can check this blog post. There are several useful libraries including basic and advanced roofs.

http://www.sweethome3d.com/blog/2017/12 ... aries.html

In making wall frames etc, I use the dimensional lumber library from this blog post

http://www.sweethome3d.com/blog/2017/12/08/additional_contributors_libraries.html

Author has standard sized lumber and frames and plywoods etc.

Moreover there's plumbing items library among others.

Maybe you ...