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Archflow
What Archflow is
Archflow is a web platform for designing software systems with AI. Its assistant can generate architecture diagrams, user stories, scope cards, and technical documentation from natural-language input. The diagram editor includes UML classes, interfaces, components, databases, and services, with drag-and-drop creation and undo/redo history. Teams can work together through synchronized editing, live cursors, presence indicators, comments, and activity feeds. Kanban boards track story status, estimates, and acceptance criteria, and link stories to architecture diagrams. Documentation has a Markdown editor with live preview and categories, and can also be AI-generated. The Free plan costs nothing and is limited to one project and three diagrams per project. Pro costs $5 a month and includes unlimited projects and diagrams, AI design tools, collaboration, and priority support. Archflow says it handles data under UK GDPR and the Data Protection Act 2018, and that prompts and selected project context are sent to OpenAI’s API.
Who it suits
The Free plan is positioned for personal projects and exploring the service; Pro is aimed at teams building software together. Users must be at least 18 years old.
What it does well
- AI creates diagrams, stories, scope cards, and documentation.
- Diagram editor supports drag-and-drop and undo/redo.
- Kanban stories link directly to architecture diagrams.
- Pro includes unlimited projects and diagrams.
What to know first
- Free is limited to one project.
- Free allows three diagrams per project.
- AI prompts and selected project context go to OpenAI’s API.
Limits
The Free plan costs nothing and is limited to one project and three diagrams per project. Pro costs $5 a month and includes unlimited projects and diagrams, AI-generated stories, scope and documentation, real-time collaboration, and priority support.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | $0/forever · 1 project · 3 diagrams per project · user-story Kanban board · basic UML diagram editor · email support | Free |
| Pro | $5/per month · unlimited projects and diagrams · Flowy AI assistant · AI-generated stories, scope and documentation · scope boards · documentation editor · real-time collaboration · comments, mentions and activity feed · global search · priority support | $5 a month |
As archflow.dev lists them, read 15 Oct 2026. The maker's own page has the final word.
Getting started
- Open https://archflow.dev/ in a web browser.
- Choose the Free plan or Pro plan; a free trial is also offered.
- Create a project and begin adding diagrams, user stories, or documentation.
- Use the AI assistant to generate design materials from natural-language input.
Verdict
Archflow brings architecture diagrams, user stories, and documentation into a collaborative web workspace. The Free plan has firm project and diagram limits, while Pro costs $5 a month and adds unlimited projects and collaboration.
Questions
Is Archflow free?
Yes. Its Free plan costs nothing and includes one project, three diagrams per project, Kanban user stories, a basic UML diagram editor, and email support.
How much does Pro cost?
Pro costs $5 a month. It includes unlimited projects and diagrams, AI design features, real-time collaboration, and priority support.
Which platforms does Archflow support?
Archflow is available on the web.
What can Archflow’s AI assistant create?
It can generate architecture diagrams, user stories, scope cards, and technical documentation from natural-language input.
Which services does Archflow integrate with?
Archflow lists Stripe for payments, OpenAI for AI, GitHub and Google for authentication, and Resend for email.
How does Archflow handle AI data?
Its privacy policy says prompts and selected project context are transmitted to OpenAI’s API. AI chat history is stored on Archflow servers.
Facts from Archflow's own pages
- Age requirement
- Users must be at least 18 years old to register and use the service. · archflow.dev, 15 Oct 2026
- AI assistant
- The Flowy assistant creates architecture diagrams, stories, scope cards and technical documents from natural-language descriptions. · archflow.dev, 15 Oct 2026
- AI coding workflow
- Archflow says linked stories, scope, diagrams and documents can be handed to engineers or fed into AI coding tools. · archflow.dev, 15 Oct 2026
- AI data handling
- Prompts and selected project context are sent to the AI provider, while generated outputs and chat history are stored as project data. · archflow.dev, 15 Oct 2026
- Architecture diagrams
- The visual editor supports UML classes, interfaces, components, databases and services with drag-and-drop editing and undo/redo. · archflow.dev, 15 Oct 2026
- Authentication integrations
- Accounts can be registered with email and password or through GitHub and Google OAuth. · archflow.dev, 15 Oct 2026
- Billing
- Paid subscriptions are charged in advance through Stripe and continue until the billing period ends after cancellation. · archflow.dev, 15 Oct 2026
- Collaboration
- Real-time collaboration includes live cursors, presence indicators, synchronized editing, comments, and activity feeds. · archflow.dev, 10 Oct 2026
- Company listing: executive
- Crunchbase names Hong Yoon-jung as CEO of Archflow AI. · crunchbase.com, 15 Oct 2026
- Company listing: founder and size
- LinkedIn lists Archflow by Ground One Inc. as founded in 2022 with 11–50 employees and headquarters in Seoul. · linkedin.com, 15 Oct 2026
- Company listing: funding
- Crunchbase shows one grant funding round associated with the TIPS Program, but the amount is obscured. · crunchbase.com, 15 Oct 2026
- Company listing: headquarters
- Crunchbase places Archflow AI in Seocho, Seoul, South Korea. · crunchbase.com, 15 Oct 2026
- Company listing: legal name
- Crunchbase identifies the Archflow AI company as Ground One Inc., also known as Ground One, with active for-profit status. · crunchbase.com, 15 Oct 2026
- Company news
- LinkedIn reports that Archflow received a K-DATA Award as an excellent 2025 Data Voucher Program case for AI-based building-energy optimization. · linkedin.com, 15 Oct 2026
- Data retention
- Account data is deleted or anonymized within 30 days after deletion, AI history and activity logs may remain up to 12 months, and payment records are retained seven years. · archflow.dev, 15 Oct 2026
- Diagram editor
- The visual editor supports UML classes, interfaces, components, databases, and services, with drag-and-drop creation and undo/redo history. · archflow.dev, 10 Oct 2026
- Documentation
- Technical documentation uses a Markdown editor with live preview and categories, and can be generated with AI. · archflow.dev, 10 Oct 2026
- Documentation depth
- The product advertises Markdown documentation with categories, live preview and AI generation, but no separate public developer documentation was found. · archflow.dev, 15 Oct 2026
- Eligibility
- The terms say users must be at least 18 years old to use the service. · archflow.dev, 10 Oct 2026
- Free tier limits
- The Free plan is described for personal projects and exploration and is limited to one project and three diagrams per project. · archflow.dev, 10 Oct 2026
- Integrations
- The service lists Stripe for payments, OpenAI for AI, GitHub and Google for authentication, and Resend for email. · archflow.dev, 10 Oct 2026
- Intended users
- The Free plan is positioned for personal projects and exploring Archflow, while Pro is positioned for teams building software together. · archflow.dev, 10 Oct 2026
- Licence
- Archflow's terms state that its software, branding, documentation and underlying technology are company property protected by intellectual-property law. · archflow.dev, 15 Oct 2026
- Limit: security guarantee
- Archflow states that no electronic transmission or storage method is completely secure and it cannot guarantee absolute security. · archflow.dev, 15 Oct 2026
Where Archflow stands on Freedom251
- AI Diagram Generators#8 of 32