I built an AI tool for solo founders (startup ops - planning, finances, marketing, all in one place) and I'm at the "have real users, need paying customers" stage with zero marketing budget to spend. I've tried Reddit posts and cold outreach so far. For those who've been here, what actually converted for you? Curious if it was one channel that outperformed everything else, or just volume of small efforts adding up submitted by /u/tmeermusic [link] [c...