I built a SaaS in 10 days. 3 weeks live. 0 paying customers. Here's the data.

PostDew is a LinkedIn post generator that strips the AI rhythm out of generated content. The "let's dive in", the arrow bullets, the parallel structures, the ChatGPT cadence everyone can smell now. I built the MVP in 10 days around my full-time dev job, deployed to a 5 euro Hetzner box, shipped 21 days ago.

The numbers right now:

- 0 paying customers

- ~10 cold DMs sent on LinkedIn (free tier limited me)

- 2 replies (one polite decline, one polite thanks)

- 0 signups from those replies

- Submitted to HN yesterday, got flagged, 30-40 visitors, 0 signups

- I use PostDew myself daily to post on the company LinkedIn page

What I'm learning the hard way: building and selling are completely different sports. I treated the build like a sprint and marketing like an afterthought. That's the inversion most indie devs make.

The meta-irony I keep noticing: I built this to help people who don't want to write LinkedIn posts. Now I'm writing LinkedIn posts about not having customers for the tool that helps you write LinkedIn posts. The dog-fooding is real. The validation that anyone wants this besides me is not.

What I've tried:

- Cold DMs to 10 LinkedIn operators. 2 replies, 0 signups.

- One Show HN. Flagged within hours.

- One vulnerable LinkedIn post about all of this. Crickets.

What I'm doing this week:

- Burning a LinkedIn Premium free trial on 50 DMs to people who self-identified the pain in a recent post ("haven't been posting", "trying to post more")

- Cross-posting this story here and on Reddit

- Recording a YouTube vlog about it

What I'd value feedback on:

- Anyone shipped a content tool in this category and survived to find your first 10 paying users? What was the unlock?

- Is "0 customers in 3 weeks" panic-mode or statistical noise? I keep telling myself noise but I've never been here before.

- What's the AI tell that makes YOUR skin crawl on LinkedIn that I should add to the strip-list?

Tech stack: Django + DRF + Celery + Redis on Hetzner CX23, React 19 + Tailwind v4 on Vercel, Supabase Postgres, OpenAI gpt-4.1-mini default with Anthropic fallback, DodoPayments for billing. Whole infra runs on roughly $5/month.

Demo (no signup, 1 free per IP per week): postdew.com

Brutal feedback welcome.