As an aside, vim on Termux is not nearly as difficult/awkward as one might think. Of course you can plug in a keyboard to the USB port wired/wireless with dongle or via bluetooth, but even without it I find vim's modal editing with a focus on keystroke golf (e.g. fewest keystrokes possible) to be a boon for finger-pecking out on a soft keyboard. For doubters, don't knock it til you try it!