AI-assisted domain discovery
Turn a plain-language description of a business into an explicit model that captures people, information, actions, rules, permissions, and flows.
modelARch
modelARch is a visual, AI-assisted domain modeling tool that turns a business description into an explicit model and generates a runnable full-stack application from it. It is aimed at teams that want to validate roles, rules, and workflows before taking ownership of the code.
Overview
modelARch is a visual and AI-assisted domain modeling tool that turns a business description into an explicit model, then generates a runnable application from that same source. The product emphasizes a deterministic model-to-code workflow: the model is the source of truth, and the generated output follows from it.
The site describes a step-by-step flow that starts with discovery, moves through modeling and designer setup, and ends with preview, generated app, code, and tests. The goal is to let teams validate business logic, role experiences, and implementation details before they take ownership of the code.
Core capabilities
Visual modeling and preview
Validate screens, roles, and flows in the browser before generating the application, so the model can be checked before code is produced.
Role-based experience design
Shape the user experience for different roles in a dedicated Design Studio, including custom and advanced views on higher plans.
Full-stack app generation
Generate a full-stack project with a Python/FastAPI backend and React/TypeScript frontend, plus database setup, migrations, Docker, and tests.
Configurable app stack
Choose the app’s data and infrastructure components from supported options such as PostgreSQL, MySQL, MariaDB, SQLite, MongoDB, Redis, RabbitMQ, Amazon SQS, and Celery.
Portable code handoff
Keep portable source artifacts with the generated code, including MODEL.md and DESIGN.md contracts, so the project can be inspected and extended by a team.
Typical use cases
Productization of an internal workflow
Use modelARch when a prototype is turning into a product and you need roles, permissions, and workflows to be explicit before the system is handed off or extended.
Operational systems with real rules
Model bookings, approvals, inventory, or service delivery as software rather than a spreadsheet when the business logic has outgrown manual tools.
Pre-build validation with stakeholders
Use the browser preview to align stakeholders on screens and role-specific behavior before paying to generate the code.
Team handoff with owned source
Adopt it when a team wants a full-stack starting point, tests, and documented model artifacts instead of a blank codebase.
Enterprise engagement and guided delivery
Use the enterprise contact flow when a company wants help modeling, validating, and shipping software with direct support from the modelARch team.
Pros and Cons
Pros
- Keeps business rules, permissions, and workflows explicit in a model that can be inspected and refined.
- Lets users preview the product in the browser before deciding to generate code.
- Generates a full-stack project with backend, frontend, Docker, migrations, and tests.
- Includes portable contracts such as MODEL.md and DESIGN.md with the download.
- The terms state that customers retain ownership of the models and generated code.
Cons
- The service is still in active development, so features may change over time.
- Code generation is a separate paid step by app size, rather than being included in the subscription.
- The source material does not provide broad integration documentation beyond the stack and module options shown on the pricing page.
FAQ
What does modelARch do?
modelARch is a visual, AI-assisted domain modeling tool. You describe how the business works, it captures that structure as a model, and you can then generate a runnable application from it.
How does pricing work?
The pricing page says Basic and Pro plans cover discovery, modeling, and validation. Code generation is purchased once per app, by size, when you are ready to take the code.
What kind of code does it generate?
The generated stack is based on Python/FastAPI for the backend and React with TypeScript for the frontend. The pricing page also lists database, cache, and queue options, plus Docker and tests.
Do I own the generated code?
The terms state that you retain ownership of the domain models, Gherkin features, generated code, and other content you create with modelARch. The contact page also says you own the generated source and can deploy it anywhere.
Is the product stable and finished?
The product is in active development, and the terms note that features may change over time. The service is provided as-is and as-available.
Quick Facts
- Category
- AI-assisted domain modeling
- Primary output
- Full-stack application code
- Backend stack
- Python / FastAPI
- Frontend stack
- React / TypeScript
- Pricing shape
- Subscription for modeling plus separate one-time code purchase
- Source domain
- modelarch.io
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