The €300 Tech Stack Behind a €500K Solo Business

When I tell people I run a €500K business with no employees, I usually get the same reaction:

"Wait… how?"

It sounds impossible. No team. No assistant. Just me.

And yet, Inscaler has passed half a million in revenue with over 90% margins.

The secret?

Luck, execution, some good skills 😅 and a lean tech stack that costs me less than €300 a month.

But let me be clear - this didn't happen overnight.

I'm personally very passionate about productivity and tech tools in general.

If you were a fly on the wall, and the few evenings I can get to sit down on my couch after dinner and kids in bed, you would see me watching YouTube and productivity videos.

Therefore, over the past 2.5 years, I tested more than 100 tools and productivity apps.

Some were great at first, but didn't last.

Others slowed me down more than they helped.

Today, I have a stack I rely on every single day.

And I'm happy to pay for it. Here's what it looks like:

• The Browser Company (Dia) – I've switched from Arc to Dia, and I'm hooked. Every window opens with embedded AI, which has changed how I work.
• Notion + Supabase – my second brain. Built on Tiago Forte's framework, connected directly to clients' projects and materials. This is where everything lives. On Subabase, I have a direct connection to Notion; therefore, clients have access to all the material and project tracking directly on a clean dashboard.
• Qonto – I use it for finances and invoicing. It had its bumps recently with poor customer experience, but switching would be even more complicated. My to-go after - if Qonto fails - is Sibill.
• Canva – I'll be honest, I'm not a designer. Canva saves me: presentations, decks, visuals - all done there.
• Attio – my CRM. I recently left HubSpot and haven't looked back. Attio feels faster and lighter. Built for the AI world and AI-first. While Hubspot still feel like...old.
• Mural – for frameworks and visual boards. Better fit for me than Miro, which is way too complicated.
• Litlyx – website analytics that's cleaner than Google Analytics. Free plan gets you lots of data and a beautifully designed dashboard.
• Webflow – I built my website on it, and I love how flexible it is.
• signNow – contract signing, quick and straightforward.
• Kit – my newsletter engine (yes, the one you're reading now).
• Publer – social media scheduling for LinkedIn personal, company page and Instagram.
• Slack – internal comms and client comms, all in one.
• Grammarly – always-on writing coach. Must have for a non-English speaker who communicates somehow in English.
• Fathom – call recording, essential for reviewing conversations.
• ChatGPT Workspace – my hub for agents and AI work.
• Google Drive – the vault for frameworks, templates, and documents.

That's the complete list.

Looking back, the hard part wasn't the €300 spent - it was the process of figuring it out.

The hours wasted on testing tools that didn't work.

The data migrations.

The "this one will change everything" moments that ended in time wasted!

But here's the truth: no single tool will fix your business.

What really matters is the system you build around them.

And most importantly, avoiding duplicates. One purpose ---> One tool.

So if you're building your own setup, here's my advice:

• Don't chase every new app that pops up on Product Hunt (or YouTube!).
• Pick the few that feel easy to use and implement.
• Stick with them long enough to build habits.
• Avoid duplicates.

That's how you get clarity instead of chaos.

This is what lets me run Inscaler lean, profitable, and focused — all without a team.

Thanks for reading this far. See you all next week.