This is a re-launch of a web app I made a few years ago. I'm operating on the freemium model: pay a small one-time fee for access to premium features such as tr

This is a re-launch of a web app I made a few years ago. I'm operating on the freemium model: pay a small one-time fee for access to premium features such as trade position size and price/volume indicators. Feedback needed, thanks!