I used Drafts extensively with Bear. Later on, when I moved to Obsidian, I found out that I could achieve the same frictionless, templated input with the Shortcuts app. This is what I value the most in my note-taking workflow.
As for retrieving and editing, 1Writer is competent at best. Fortunately, that’s not crucial for me.
I tried the mobile app, but it’s not mature enough for my needs. Besides, I want to keep my notes on Dropbox/Git and the integration is currently very hacky.
The one thing I would advise you against is having two separate note-taking systems and trying to manage them in tandem. I found it difficult enough to maintain one future-proof set of notes.