Hello HN! This is a SaaS I've built the last few months using Flask and the least amount of JS that is possible.

It allows setting up SMS/E-Mail/App alerts for stocks, options and crypto, and in the future also bonds and macroeconomic events. There are lots of KPIs (just for example: earnings growth Q/Q, price, volume, the option greeks, etc).

For stocks the main data source right now is Yahoo Finance, but at some point I'd like to move to a better one (but more costly one).

Sounds Like a screener with alerts?