Hey Product Hunt 👋

AI app builders made it incredibly fast to start building software.

But as applications grow, so do the roles, permissions, workflows, business rules, and dependencies between them.

With prompt-driven development, every change can mean another generation, another correction, and another attempt to keep everything consistent.

We think the problem is simple: you shouldn't have to keep fixing generated code. You should change the system that defines it.

That's why we built modelARch.

🧠 Model first. Generate later.

With modelARch, AI helps you turn natural-language requirements into an explicit model of your entire application: data, relationships, roles, permissions, workflows, rules, and behavior.

Something changes?

Change the model, dispose of the code, and regenerate it.

The model remains the source of truth.

👀 Build the whole app before buying the code

You can model your application from end to end, preview it across desktop, tablet, and mobile, change it, and validate it before purchasing the generated code.

Your subscription gives you access to the modeling environment.

No credits. No pay-per-prompt.

Keep refining until you're satisfied.

Only then do you pay for the code.

⚙️ Then modelARch generates deterministically

AI helps interpret what you want to build.

But the final application isn't generated probabilistically from another prompt.

Once the model is ready, modelARch generates the full-stack application deterministically from that model.

AI interprets. The model defines. modelARch generates.

🔄 Evolve the model. Regenerate the software.

This is the bigger idea behind modelARch.

We don't think generated code should be something you continuously maintain. The model should be the durable artifact. The code should be disposable.

As your business changes, you evolve the model. The existing code can be discarded, and the entire application regenerated deterministically from its new state.

No patches. No accumulated prompt history. No trying to keep generated code in sync with what the business is supposed to do.

We maintain evolutionary models, not generated code.

The model evolves. The code is disposable. The software is regenerative.

And regeneration isn't another purchase: once you've generated your application, you can keep evolving the model and regenerating the software without paying for the code again.

🎯 Who is it for?

Founders, developers, agencies, and software teams building applications that are becoming too complex for endless prompting — especially systems with interconnected roles, permissions, workflows, and business rules.

If you've been building with Lovable, Base44, Bolt, or similar tools, we're particularly interested in hearing what you think.

Maybe the next step after vibe coding isn't better code generation. Maybe it's making generated code disposable.

modelARch

Stop fixing code in Lovable. Build scalable apps instead.

Stop fixing code in Lovable. Build scalable apps instead.