Forgotten Side Project Got 700 Users

TLDR: Josh, a UK dev, built an AI job-application tool for a friend. Didn't touch it for 6 months. Came back to 700 organic users. Slowly monetized it to $1K MRR over 18 months. No viral launch. No audience. No VC. Here's the full breakdown.

I've been deep in the indie hacker rabbit hole lately reading every case study I can find on builders who do this the boring way. No Product Hunt explosions. No Twitter audience of 50K. Just quiet, consistent shipping until something sticks.

This one hit different.

The accidental origin

Josh (@hellwaiver on X) is a UK-based dev with a day job. He watched a friend spend hours writing cover letters for every job application tailoring each one, getting nothing back. Soul-crushing stuff.

So he built a simple AI tool: paste your resume + job description, get a polished, ATS-ready cover letter. Not a business. Just a thing for one person.

"I didn't do massive market research. I had a simple idea and I built it."

The "set it and forget it" growth hack that wasn't a hack

He posted it on Reddit (r/jobsearchhacks), got some traction, then got busy with his actual job and left the project completely alone for ~6 months.

When he finally checked the database: 700 users. Pure organic. No ads. No posts. Nothing.

This is the part that stopped me cold. Product-market fit isn't always loud. Sometimes it's 700 people quietly passing around your tool because it actually works.

The monetization mistakes (and the pivot that fixed them)

He added a "Buy Me a Coffee" button first. Made $5 total. Classic trap.

Then he did the right thing: proper paid tiers. But here's the key he didn't just slap a paywall on. He upgraded the product first. Added login, premium AI models, Word/PDF exports, resume keyword optimization, interview prep tools.

He also used Microsoft Clarity to watch real user sessions. Saw people rage-clicking trying to copy text so he added one-click copy buttons. Simple fix, real impact on retention.

The numbers

→ 18 months of part-time building

→ Thousands of users, 150+ paying subscribers

→ $1K MRR hit in April 2025

→ Aiming for $10K MRR by end of year

What I took away from this

I've been tracking stories like this founders who hit their first $1K MRR without a big audience or launch and a few patterns show up constantly:

1. Solve a recurring, painful problem job hunting never stops. Cover letters never stop being annoying. That's a durable market.

2. Free tiers work as proof of value, not as charity. When the free version is genuinely useful, the paid version sells itself.

3. Quiet consistency is underrated. Josh wrote no viral threads. He just shipped, improved, listened, repeated.

4. Watch behavior, not just feedback rage-clicks tell you more than survey responses.

His bio is literally just: "just keep shipping." And he's writing this from the French Alps. Make it make sense.

Where I found this

Stumbled across the full case study on MRR Story (mrrstory com) a site that publishes detailed founder breakdowns like this one. The unfiltered version has everything: his exact tech stack, how he built directory backlinks, his full monetization timeline. Worth a read if you're into this stuff.

What's your take on the "build for one, stay for many" approach? And is anyone else finding that organic Reddit traffic is their most consistent growth channel right now? Curious what's actually working for people here.