Simple calculator monetisation using AI

In the last 72 hours, I used AI to build and launch a fully monetised platform around one of the most basic, overdone ideas on the internet: online calculators and utility tools.

Nothing flashy. Nothing original.
https://tool.world

What is different is building it with real startup architecture — designed from day one for traffic, engagement, conversion, and scale — and compressing months of work into days using AI as a true co-builder.

In 3 days, I built a system with:

• 1,000+ tools
• Instant creation of new tools
• Built-in SEO pages for organic growth
• Automated blog publishing
• Self-improving tools
• User accounts & saved history
• Behaviour & conversion tracking
• Subscriptions
• Pay-per-tool upgrades
• Advertising placements
• Donations
• Favourites & personalisation
• Growth funnels
• Admin dashboard
• Customer feedback loops

Plus a platform that literally learns what users want and publishes content and features around it.

Monetisation is engineered at every layer:

→ Free tools to drive volume
→ Subscriptions for power users
→ One-off upgrades
→ Ads for non-paying users
→ Community support

All optimised around acquisition, retention, and lifetime value.

This isn’t about “building an app”. It’s about proving what’s possible now.

With the right systems and AI workflows, a single founder can turn a simple idea into a scalable, revenue-ready business in days. Distribution, monetisation, and iteration are no longer bottlenecks. Speed is the new unfair advantage.

We’re entering a phase where execution beats ideas — and AI is the multiplier.

Need a tool? Request it here → https://lnkd.in/eknJZqKF