Weldr is the AI app builder designed for people who eventually want to leave. We help you build faster without locking you in.
AI code generation is having a moment. Tools like Bolt, Lovable, and v0 can spin up an app from a prompt in minutes. It feels like magic.
But there's a catch: the moment you need something custom, you hit a wall. Either the AI can't do it, or you have to leave the platform entirely and start over with a messy export.
We've been there. As engineers, we've felt the frustration of promising tools that become cages. We wanted something different: AI that gets you started fast but doesn't become a dependency you can't escape.
Instead of all-or-nothing, Weldr lets you choose what you own and what stays automated—and change your mind anytime.
Let Weldr handle it completely. Database schemas, auth, CRUD operations—the stuff that's the same in every app. Regenerate freely.
Mix generated code with your custom logic. Your @custom blocks are preserved across every regeneration.
Take full ownership. Your pricing logic, billing rules, AI prompts—the code that differentiates your product. Weldr never touches it.
Your app is real Next.js, TypeScript, and Postgres. Export it, deploy it anywhere, hire developers to work on it. No proprietary runtime to escape.
The code that makes your product unique—your algorithms, business rules, special sauce—lives in ejected surfaces that Weldr never overwrites.
As your team grows, take ownership of more surfaces. Eventually, you might own everything and only use Weldr for prototyping. That's a success story, not churn.
We use proven, widely-adopted tools so you're never stuck with something niche.
Describe an app, see it come to life, and experience progressive ownership firsthand. Free to start, no credit card required.