Markdown app request

A secure, private markdown notes app would:
* Open new revenue opportunities
* Extend Proton’s privacy ecosystem
* Expand customer's digital workflows
* Leverage existing encryption technology
* Clearly meet user demand (well, at least mine)
* Reinforce the promise of “privacy by design.”

I am using Obsidian and really like it, yet unencrypted notes on my devices is a significant concern.