aistina

You’re welcome! Glad I could help.

I think Neoformat lets you format a buffer without saving it, without the need for an LSP. So you could:

:enew 
:set syntax=json
(Write some code)
:Neoformat <formatter-name>

https://github.com/sbdchd/neoformat

For iOS there’s Mlem, which seems pretty alright—using it right now. Not sure about Android, or if there are any other iOS options.