If an app like this had a lot of users, I could see it really catching on (I realize that is a bit circular).

I like the concept of a very simple, no id, no phone number, no email payments and messaging app. Almost that could replace the SMS function on many phones, but with money/payments built in and very frictionless to access.

Seems like most of the messaging apps now days require a phone number (eg Signal, WhatsApp) and payment apps are much worse -- full kyc in most cases. A lightweight app that stores lots of stuff locally could be very cool.

Note that it is just a prototype and probably not something you should treat as a finished or safe app:Note that it is just a prototype and probably not something you should treat as a finished or safe app:

Github: https://github.com/hynek-jina/linky