There is indeed, and it's making me very hopeful for the future of org-mode. Beyond Filestash (great work!) there's the somewhat similar org-web [0], Beorg for iOS [1] and Orgzly for Android [2], all of which them leveraging the power of org-mode without requiring anyone hitting M-x or C-c even once.

What Markdown has going for it is a much wider acceptance as a simple, straightforward way to work with text. Especially on modern devices, users with little or no coding background are successfully being lured into (superior!) plaintext workflows by apps with a great UI, and appear to take to it. iA Writer [A] and Bear [B] are two prominent examples of such apps, and I can't see why they would be any worse (or less popular) apps had they instead opted for org-mode behind the scenes.

This is what org-mode needs to gain widespread adoption, and I'm hoping we're on our way there.

[0] https://github.com/DanielDe/org-web [1] https://beorgapp.com/ [2] http://www.orgzly.com/ [A] https://ia.net/writer [B] https://bear.app/