Building in public — day 2: shipped free calculator tools today

In my earlier post I asked what free tools would actually help agency founders make better decisions.

Today I built and shipped them.

No sign-up. No email. Just open and use.

What's live now at introdoor.com/tools:

Two sets of free calculators — SEO pricing and PPC advertising pricing — covering 10 countries with real local market rates. Australia, Canada, France, Germany, India, Netherlands, Singapore, UAE, UK, and USA.

Each calculator helps you figure out what to charge based on actual hourly rates in your market, your team costs, and your target margin. So you stop undercharging and start knowing your real profit per client before you sign the contract.

Why I built these free

Most agency founders I've observed price on gut feel or by copying competitors. Neither works long term.

If you don't know your real cost per hour — team, tools, overhead — you can't price correctly. And if you can't price correctly, you can't build a sustainable agency.

These tools exist to fix that. Free, forever.

What's next

More calculator types are coming. If you run an agency and there's a specific calculation you do manually every week — drop it in the comments. I'll build it.