metrIQ started as a spreadsheet for my own training. The numbers were fine, but a spreadsheet never tells you anything — it just holds what you typed. So I switched to asking ChatGPT. It could explain things, but it forgot my history, answered the same question differently on different days, couldn't give me the stats I wanted, and buried it all in generic advice. I wanted a coach who remembered me. So I built my own. The first version was a rough thing in Lovable, mostly because I wanted an exc...