Show HN: TapeSim – Practice Reading the Tape (tapesim.app)

I made this replay simulator desktop app as a part of the Building The Trading Edge playlist on Youtube. It's my first commercial product. I needed a replay simulator that could do full tick-by-tick order book replay on US equities and when I couldn't find any, I made my own in F#.

If any of you ever wanted to learn to daytrade stocks, use this to practice before risking any money first.