As it is, the * vs # for headings makes switching between the two uncomfortable.
It is helpful to add extra keys to your touch keyboard, which you can do by editing your termux properties file (see https://wiki.termux.com/wiki/Touch_Keyboard). Helpful when you don't have a hardware keyboard available.
While my initial intention was to bring as much org support to iOS as possible (https://plainorg.com), my thinking evolved over time and I gravitated towards a different kind of mobile-optimised experience, and so https://journelly.com was born. I’ve recently added Markdown support too https://xenodium.com/journelly-1-3-released
I use Journelly the most and is also my most popular app.
I have an org scratch pad and also a habit tracking app https://flathabits.com.
There is an official fully graphical Emacs for Android (not just the terminal version in Termux).
> that was a pleasure to use
Oh... Well, it will probably get better in time, as new features are added. For now, it actually works great with an Android tablet of 8" or more and a bluetooth keyboard. The small screen of a phone doesn't lend itself well to Emacs's interface.