I have an Android phone and Android tablet, both of which have the WordPress application on them.
However, what you can do is much more limited than using a PC. I have worked out a few simple workarounds.
TEMPLATE TO BLOG
Make a template for the blog, and give it an easy name
Make a draft message and save
Copy the template
Change the name to what you want
Open in the WordPress app and write blog
POST PUBLISHING EDITING
On my tablet, the app will not allow you to add photos.
But the app on the phone does allow me
So I open the photo editor on the phone and edit the photo and save
Then open WordPress app and upload the photo from the phone