A handful of folks, myself included, are breaking org out of Emacs, making it more accessible to all.

I built two apps for iOS:

https://flathabits.com

https://plainorg.com

There are other org-based tools out there.

https://BrainTool.org

https://logseq.com

https://orgzly.com

https://beorg.app

https://easyorgmode.com

https://organice.200ok.ch

https://orgro.org