Do you have product market fit, and just need to do more marketing? If so, I would keep going. Otherwise, I'd probably be a bit burnt out after 3 years of no PMF.
A session recording and product analytics tool: https://scryspell.com/
I built it because I thought session recording was such a cool feature, and wanted to know how to make one.
I have a version 1.0, and now working on how to sell and market in a crowded product space!
Currently it's meant to help devs fix UI and UX issues by seeing exactly what their users saw, including a log of the browser console and network traffic.
I say currently because it has preset analytics (charts for top entry page, top exit page, etc) but am working on letting users define their own trend and funnel charts. That will open it up to basic web/product analytics.
The goal is to be simple analytics + session recording w/ masking.
1. For me, at a senior dev level, about half are multiple rounds of leetcode / system design and the other half are some sort of live coding something more practical.
2. I think they're mostly just making calls to the existing LLM's apis.
3. I ask myself why I started the pet project. If it was to learn something new, well, I probably got bored because I learned the the part that was interesting to me.
It mostly just showed that I had a genuine interest in programming, and served as a talking point (why Clojure, my experience with it, etc). The project wasn't related to the job at all.