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Draw+ for Windows Privacy Policy

Effective date: 2026-06-04

This Privacy Policy explains how Draw+ for Windows handles your data. It reflects the current implementation: a local-first desktop application with on-device AI.

Summary

  • Draw+ for Windows is local-first. Your models, diagrams, and design data stay on your PC.
  • The on-device AI Co-Pilot runs entirely on your machine. Your prompts and models are never sent to an external server.
  • The only network communication is for sign-in and subscription verification (billing).
  • No tracking, no third-party analytics SDKs, no ads.

Data We Handle (On-Device Only)

Stored and processed locally on your computer:

  • Your engineering content: diagrams, SysML V2 / UML / BPMN models, requirements, test cases, trace links
  • Saved project files (local XML / KerML-compatible text on your file system)
  • AI Co-Pilot prompts and generated output (processed by the bundled on-device LLM)
  • App settings: language preference, UI theme, and similar local preferences

Account & Billing Data

To save (persist) models to local files, a subscription is required. The following minimal data is handled for that purpose only:

  • Authentication: Your account is managed via Firebase Authentication. Your email address and authentication identifiers are processed to sign you in and associate your subscription state.
  • Payments: Purchase and cancellation are handled through Stripe's hosted Checkout and Customer Portal in your browser. Draw+ does not store your card or payment details; these are processed by Stripe.
  • Subscription status: Whether your subscription is active is checked to unlock saving.

What We Do Not Collect or Send

  • The contents of your models, nodes, projects, diagrams, or AI prompts are never sent to any external server.
  • No location, contacts, calendars, or advertising identifiers.
  • No third-party analytics or behavioral tracking of your design work.

On-Device AI

The AI Co-Pilot is powered by an on-device LLM (llama.cpp, with Llama-3.2-3B-Instruct bundled). Natural-language instructions, your diagrams, and generated models are processed entirely within your machine and are not transmitted externally. This allows AI assistance even in air-gapped environments.

Data Sharing

We do not share your design data with third parties. Account and billing data are handled only by the service providers named above (Firebase, Stripe) strictly to operate authentication and subscriptions.

Data Retention and Deletion

  • Your project files live on your file system; you control them like any other file and can delete them at any time.
  • You can cancel your subscription anytime via the Stripe Customer Portal.
  • Account deletion requests for authentication data can be made through the contact channel below.

Security

  • Design data stays on your local machine and within your own file system.
  • Billing communication uses the providers' secure, hosted infrastructure.

Children's Privacy

Draw+ for Windows is a professional engineering tool and is not directed to children.

Changes to This Policy

We may update this policy as the product evolves. The latest version is published at https://shokoma.com/privacy_policy.

Contact

For questions about this policy, contact us via https://shokoma.com/contact.