Thanks all. Bubble seems like it could do almost anything, but would take quite some effort to build, not far from just doing it in code.

For other people's reference: some of the no-code / low-code apps I've looked at;

Bubble - no code webapp

Wappler - low code web & app

WebFlow - web apps
--> can be combined with Memberstack for user mngmnt

bondlayer.com - multilingual no code mob + web app

draftbit - no code mob + web app

appgyver - no code mob + web app

Remake - low-code web app (by WIP member - plain HTML -> web app)

retool.com - “internal business apps”

budibase - “internal business apps”

unstack.com - no code web content bizz, A/B, marketing (CMS...)

BravoStudio - mobile apps

candu.ai - no code ... something

yourvone.com - no code mobile app, looks shakey

pory - make simple site from airtable

Carrd - one-page web apps