About

About Grexus

Grexus is an AI app builder with a human verdict. Founders describe an idea in plain words; AI agents plan, build and test a real web app and prove each part in a live preview; the founder decides what is done and what goes live.

What Grexus does

A founder types an idea. A short conversation fills the gaps, and Grexus turns it into a plan: every feature, in order. Agents then build one feature at a time on the founder’s own Anthropic or OpenAI key, inside an isolated sandbox, while a live preview shows the work. Every check comes with its proof — a screenshot, a passing test, a real email. When the founder publishes, Grexus hosts the app for real customers, with backups and a one-click way back.

What it stands for

• Only a person decides. Agents plan, write, test and gather evidence; only the founder can approve work or publish it.
• Proof before trust. Work is judged on evidence, not on an agent’s own report.
• Plain language. A founder never has to make a technical decision.
• Pay per app, not per attempt. Retries are not a meter running against the founder.
• Built in Europe. The platform and its build sandboxes run in the EU, with GDPR by design.

Who makes it

Grexus is built and operated by Deep IT Consulting, a company registered in France. Company details are in the legal notice.

Read more

The Grexus blog answers the questions founders ask about building with AI, with sources. Or describe an idea on grexus.dev — seeing the plan needs no account and no card.