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