Plan your app before you build it with AI.

Zalcro turns your idea into a build-ready blueprint with architecture diagrams, a sequenced implementation plan, and step-by-step prompts for Lovable, Bolt, Cursor, and Claude Code.

  1. Describe your app idea
  2. Get your app blueprint
  3. Get build instructions
  4. Build with your AI tool

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Stuck mid-build? Zalcro works with you through your project.

Built for: Lovable, Replit, Cursor, Claude, Bolt.new, Codex

How it works

  1. Describe your app idea

    Chat about your app in plain language and answer a few guided questions. Zalcro maps out what needs to be built.

  2. Get your app blueprint

    Review your Architecture Design Document and system diagram, showing how the parts of your app connect before anything is built.

  3. Get build instructions

    Receive a Prompt Pack for Lovable, Bolt, or Replit, or a sequenced ticket backlog for Cursor, Claude Code, or Codex.

  4. Build with your AI tool

    Open your prompts in your AI app builder, or send tickets to your coding agent through MCP or export them to Linear.

  5. Get help as you build

    Your Zalcro project doesn't end when you export your plan. Return to your AI chat while building in Lovable, Bolt, Cursor, or another coding tool to clarify instructions, troubleshoot problems, and get guidance informed by your project's planning documents. When necessary, the assistant can use web search to investigate errors and find relevant information.

How Zalcro works, step by step · View samples

Building without a plan gets complicated. Fast.

AI coding tools can generate features quickly. But without a clear picture of how everything fits together, small changes can turn into costly rework.

Whack-a-bug

Fix one issue, break another.

Credits going up in flames

Repeated trial and error costs time and credits.

Jenga codebase

Changes become harder as your app grows.

Better builds start with better plans.

One blueprint. Every piece connected.

Zalcro maps your app's features, architecture, and dependencies before development begins. It turns that blueprint into sequenced prompts and implementation tickets for your AI coding tools, so every phase builds on the same plan.

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Real Zalcro samples

Zalcro's generated outputs from real app concepts, not mockups

Want to see more? Lovable · Bolt · Cursor · Claude Code · Browse 6 real samples

Can't I just ask ChatGPT to plan this?

Absolutely. ChatGPT and Claude can help you brainstorm ideas, define features, and create development plans, but Zalcro is purpose-built for AI app planning. It turns your idea into a connected architecture, system diagrams, and sequenced build instructions tailored to Lovable, Bolt, Replit, Cursor, and Claude Code.

Unlike a one-off planning session, Zalcro stays with you as you build. It preserves your architecture and decisions, helps troubleshoot errors, and supports changes through updated prompts or versioned architecture plans. Coding agents can also access your project context directly through MCP.

The difference? Zalcro doesn't just help you plan what to build. It gives you a structured blueprint to build from, and a way to keep that plan useful as your app evolves.

Turn your idea into a plan

Zalcro plans your app. Your AI coding tool builds it.

Zalcro works before and alongside AI app builders like Lovable, Bolt, and Replit, and coding agents like Cursor and Claude Code. It creates the architecture and implementation plan your coding tools can use, while keeping your project decisions available as development progresses.

  1. Idea

    Describe what you want to build.

  2. Zalcro

    Plan the architecture and build sequence.

  3. Build

    Implement the plan using your AI coding tool.

From app blueprint to build-ready instructions.

Zalcro maps your application's architecture and turns it into an implementation plan tailored to how you build.

Vibe Coding

For Lovable, Bolt, Replit, and v0

Copy-ready prompts: Follow structured prompts, one phase at a time, using your preferred AI app builder.

Agentic

For Claude Code, Cursor, and Codex

Agent-ready implementation tickets: Give coding agents dependency-aware tasks and access to your project context through MCP.

How much does Zalcro cost?

Starter

$0 / month

Builder

$19 / month (or $15 / month billed annually)

Everything in Starter, plus:

Teams

Coming Soon

Collaborative team workspaces, shared contexts, and workspace governance.

See full pricing and plan comparison

Frequently asked questions

Everything you need to know before you start.

What is Zalcro?

Zalcro is the pre-build planning tool for AI app builders. You describe your app in plain language, answer a few guided questions, and get a build-ready plan: Architecture Design Document, paste-ready prompts for Lovable and Replit, and dependency-ordered tickets for Claude Code and Cursor, before your coding agent starts. Free to start.

Who is Zalcro for?

Zalcro is for anyone building software with AI, from complete beginners to experienced developers.

Whether you're using Lovable, Bolt, or Replit to build your first app, or working with coding agents like Cursor, Claude Code, or Codex, Zalcro helps you plan your application, organize implementation, and keep architectural decisions consistent as you build.

No technical background to get started.

What do I get on the Starter tier?

The free Starter tier includes your complete Architecture Design Document and architectural diagram, along with the first phase of build instructions, your initial paste-ready prompts for vibe coding tools or Phase 1 implementation tickets for coding agents.

Your project and architecture are saved so you can return to them. The Builder tier unlocks the remaining implementation phases, including the full Prompt Pack or ticket backlog.

How is Zalcro different from asking ChatGPT or Claude for a plan?

ChatGPT and Claude can help you brainstorm an app, define features, and create development plans. Zalcro is built specifically to turn an app idea into a structured, build-ready blueprint for AI-assisted development.

Through a guided planning conversation, Zalcro creates an Architecture Design Document, system diagrams, and a sequenced implementation plan. It then produces platform-specific prompts for tools like Lovable, Bolt, and Replit, or dependency-aware implementation tickets for coding agents like Cursor and Claude Code.

Unlike a one-time planning conversation, Zalcro keeps your architecture and project decisions available throughout development. You can return to troubleshoot problems, discuss changes, and generate a new architecture version when requirements evolve. Compatible coding agents can also access your project context through MCP.

Does this work with Lovable, Bolt, or Replit?

Yes. Zalcro is designed specifically for vibe coding tools like Lovable, Bolt, and Replit. The Vibe Coding workflow produces a Prompt Pack, which is a set of platform-specific paste prompts you can use directly in your tool of choice. Each prompt gives your coding tool the architectural context it needs to build in the right direction from the start.

What is a Prompt Pack?

A Prompt Pack is a set of structured prompts tailored to a specific vibe coding platform (such as Lovable, Bolt, or Replit). Each prompt encodes the architecture decisions from your planning session so you can paste it into your tool at the right moment and have it build with full context. Prompt Packs are generated as part of the Vibe Coding workflow and are available on the Builder tier. Starter tier users receive the first prompt.

What is an Architecture Design Document?

An Architecture Design Document (ADD) is a structured written document that describes the technical architecture of a software product. It covers the technology stack, database design, main system components, key trade-offs considered, and the recommended implementation approach. In Zalcro, every ADD also includes a plain language summary, the requirements that shaped the architecture, implementation risks, and a "what to build first" checklist. The ADD is the first document Zalcro generates and the foundation everything else builds on.

Do I need to be technical to use Zalcro?

No. Zalcro is designed for people who are building software but do not have a technical background. The elicitation conversation is in plain language. You do not need to know what a database is, what hosting means, or how APIs work. Zalcro will explain options in plain terms, give you a recommendation, and flag decisions that matter without overwhelming you with the ones that do not. That said, technical users will also find value in Zalcro. The outputs are structured for coding agents to consume directly, and experienced builders can use the Architecture Design Document as a reference throughout development.

How long does it take to get my documents?

The planning conversation typically takes five to ten minutes depending on how much detail you provide. Architecture Document and diagram generation takes about a minute, depending on the complexity of your project. The Implementation Plan and tickets are generated on demand after you review and approve the architecture, and each phase of tickets generates in about a minute.

What happens if I run into problems while building?

You can return to your Zalcro project's AI chat for help. The assistant can reference your generated prompts, explain implementation steps, and help troubleshoot issues you encounter in your AI coding tool. Share the error or describe what's happening, and Zalcro can help you work through it. You don't have to start a new project just because something goes wrong during implementation.

Can I update my app plan after it's generated?

Yes. Your app plan can evolve as your requirements change.

If you need a small change while building, you can discuss it with Zalcro's AI assistant, which can help you work through the change and provide updated prompts.

For larger changes that affect your architecture, Zalcro can recommend generating a new version of your Architecture Design Document and diagram. Each architecture version has its own implementation plan and Prompt Pack or set of tickets, keeping your build instructions aligned with the updated design.

You can also ask Zalcro to explain the tradeoffs before deciding whether to update your architecture.

What happens to my projects if I downgrade from Builder to Starter?

Your documents are never deleted. If you downgrade, you retain access to your Architecture Design Document and diagram. Access to the full Implementation Plan and tickets beyond Phase 1 is gated to Builder subscribers, but the documents remain stored and are unlocked immediately if you re-subscribe.

Can I use the outputs in my own tools?

Yes. Architecture Design Documents can be exported as Markdown, PDF, or DOCX. Diagrams can be exported as images or Draw.io XML. Tickets can be exported directly to Linear or copied as structured Markdown. Linear, DOCX, and Draw.io XML export are Builder tier features.

What coding tools does Zalcro work with?

Zalcro produces outputs designed for use with any AI coding environment. The Vibe Coding workflow produces platform-specific prompts for Lovable, Bolt, Replit, and v0. The Agentic workflow produces structured documents designed to be consumed by Claude Code, Cursor, and similar tools. The Architecture Design Document and tickets can be read directly via MCP, or used with any coding agent that accepts text context.

How does Zalcro work with AI coding agents through MCP?

Zalcro supports the Model Context Protocol (MCP), which allows compatible AI coding agents such as Claude Code and Cursor to access your project's Architecture Design Document and implementation tickets directly.

Instead of repeatedly copying project specifications into new conversations, your coding agent can retrieve the architecture decisions and dependency-ordered tasks it needs from Zalcro.

Zalcro remains your planning and architecture reference, while your coding agent handles implementation.

What is spec-driven development for vibe coders?

Spec-driven development means defining your architecture, data model, and integration points before writing a single prompt. Zalcro automates this. It runs a structured elicitation conversation and produces a complete Architecture Design Document, system diagram, and implementation plan so your coding agent has a blueprint instead of guessing.

What data does Zalcro collect and do you sell it?

Zalcro collects your account email, the inputs you provide during your session, and standard usage data like feature activity and billing status. We never sell your data to third parties. For the full picture, read our Privacy Policy.

Is my data secure?

Yes. We protect your information with encryption in transit and at rest, access controls for authorized personnel only, and infrastructure security from our hosting and database providers. Zalcro never stores your password or payment card details; authentication and billing are handled by dedicated providers. We share data only with contracted service providers, not for their own marketing or model training, and session recordings capture UI interactions only, not the contents of your conversations or generated documents. Details are in our Privacy Policy.

Write-ups for builders

Can't decide? See how Zalcro compares →

Your app idea deserves a real plan.

Turn your idea into a build-ready blueprint before you start coding. Free to start, no credit card required.

Start for free