This is really timely. I was about to post a Show HN to get some feedback. I have been working on an app that will help people in their stock trading. You can find it here: https://guardrails.xyz The expensive market data feeds are not hooked up yet and I wanted to solicit some feedback before proceeding. I am also looking for monetization and partnership opportunities. Here is a youtube clip explaining: https://www.youtube.com/watch?v=C96f_xXXQZw and a survey : https://www.surveymonkey.com/r/Q8QVJN3