For my latest app, I didn’t use any analytics software or package. Instead, I had the app save events as jsonl files on the server. I used Claude artifacts to create a custom report from that data. That was just a python file which now sits on a server next to those data files, giving me a live dashboard of very customized insights.

I don’t see myself ever using an off-the-shelf analytics package again.

You realize the hallucination rates are still circa 2-10%. So 1/10 times you're getting straight up incorrect reports..