$300 MRR in 7 days. Here's exactly how I launched PostClaw.
I spent €70 on Reddit ads and received no customers. Then I posted a free message and gained 9 sign-ups. Here's everything I did to reach $300 MRR in 7 days.
What I built
PostClaw is a social media tool with a twist: instead of a dashboard, all activities happen in a chat. You connect your social accounts, and you post, schedule, and create better content simply by chatting. No new interface to learn. No context switching.
I developed it on top of OpenClaw. It's €29/month. I launched it 7 days ago.
Day 1: the costly mistake
I wanted quick results, so I ran Reddit ads.
€70 spent. 100 clicks. 0 conversions.
I sat there refreshing my dashboard. Nothing happened. I experienced that specific kind of developer despair, the one where you question if you've built something people actually want.
Spoiler: that wasn't the issue. The problem was the distribution.
What truly worked
While the ads were burning my money, I wrote a post on IndieHackers about what I was creating. No tricks. Just honest context: what it does, why I built it, where I was in the process.
40 visitors. 9 sign-ups.
For free.
I did the maths and almost laughed. €70 → 0 sign-ups. One honest post → 9 sign-ups.
I immediately stopped the ads and shifted focus to organic content.
The rest of the week
I posted daily, on Reddit, X, and IndieHackers. Not ads. Not promotions. Just building in public: what I shipped, what broke, what I was thinking.
Reddit organic: 30 visitors, 5 sign-ups. X: the rest.
By day 7: 26 users, approximately 10 paying, $300 MRR.
Not life-changing figures. But genuine traction from scratch, spending almost nothing.
The breakdown
| Channel | Spend | Visitors | Sign-ups |
|---|---|---|---|
| Reddit Ads | €70 | 100 | 0 |
| IH post | €0 | 40 | 9 |
| Reddit organic | €0 | 30 | 5 |
| X (building in public) | €0 | ? | 12 |
The paid channel had the poorest ROI. By far.
What I learned
Paid ads require trust-building elements: tested landing pages, retargeting, and iterative copy. I lacked all of that. I just threw €70 at Reddit and hoped for the best.
Organic works because you offer something before asking. A post sharing your story, your figures, your honest experience, that's value. People respond to value, not banners.
Especially the IH community. They’re builders. They can detect a funnel from miles away. But they respond to someone who's just... honest about what they're creating and why.
Where I stand now
$300 MRR after 7 days. 26 users. Still early, still learning.
My plan for the next 30 days is straightforward: keep posting, keep building, and be clear about what's happening. No more paid ads until I have the fundamentals sorted.
If you're launching something soon, don't do what I did initially. Skip the ads. Write the post.
What's been your most effective zero-cost acquisition method? I genuinely want to know what's working for others right now.
nice is it open source
Impressive reaching $300 MRR in 7 days. How long does it take you each day to write those updates on IH, Reddit and X?
The paid vs. organic breakdown is consistent with what I see. The IH community specifically reads differently — a builder sharing honest progress data gets attention that a landing page never would.
The zero-cost method that's worked best for me: commenting on existing threads where someone is discussing a problem your product solves, rather than creating your own post. Lower surface area, but the people reading that thread are already in problem-aware mode. Your signal-to-noise ratio is higher because you're not explaining the problem from scratch.
One question worth tracking at Day 30: of those 10 paying users, how many are still active? The launch MRR is exciting but the second hard problem is holding it. Especially for a social media tool where the 'aha moment' might arrive on a delay (you need to actually schedule posts and see engagement before you feel the value).
The IH community is genuinely better for B2B SaaS than most founders expect — not because it's large, but because it's full of people who are actively building and actively looking for tools.
Thanks for your comment.
I love your strategy of commenting on existing threads, I need to give it a try.
The initial users are still here at the moment. I hope it will last.