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Draw+ for Windows — Terms of Service

Service: Draw+ (Draw+ for Windows, the "Service")

Established: June 12, 2026　Last revised: June 12, 2026

These Terms of Service (these "Terms") set out the conditions for using the desktop application "Draw+ (Draw+ for Windows)" and related features and services (the "Service") provided by shokoma (the "Company"). Users agree to these Terms and use the Service accordingly.

Article 1 (Application)

  1. These Terms apply to all relationships between the Company and users concerning use of the Service.
  2. Any individual provisions, guidelines, and notices the Company separately establishes on the Service form part of these Terms.
  3. If these Terms conflict with an individual provision, the individual provision prevails.

Article 2 (Definitions)

  • "User" means anyone who uses the Service.
  • "Account" means the identifying information tied to an individual user, created by signing up / signing in to the Service.
  • "Subscription" means the monthly recurring billing contract for using the Service's paid features.
  • "Artifacts" means the diagrams, models, nodes, text, and other data a user creates or edits using the Service.
  • "Save feature" means the feature that persists artifacts to local files on the device (save, overwrite, export, etc.).

Article 3 (Description of the Service)

  1. The Service is a native modeling / diagramming desktop application that runs on Windows. It provides features such as requirements, design, SysML V2 models, simulation, code generation, and AI assistance, in principle on the user's device (locally).
  2. The Service is local-first; artifacts are stored only in local files. It does not provide cloud storage, cross-device sync, or team-sharing features.
  3. The Service is provided for individual users (single user). It does not provide organization / team / member management, role-based access control (RBAC), or per-seat billing.
  4. The Company may change the content and specifications of the Service without prior notice to users (Article 14).

Article 4 (Account Registration)

  1. Accounts for the Service are created using Firebase Authentication (provided by Google LLC). Users must register accurate and up-to-date information.
  2. Users must manage their account credentials (email, password, etc.) at their own responsibility and must not let third parties use them or lend or transfer them.
  3. Users are responsible for damages arising from insufficient credential management, errors in use, third-party use, etc., and the Company bears no responsibility.
  4. Users may sign out at any time through the Service.

Article 5 (Subscription and Fees)

  1. The Service's paid features are provided via a monthly subscription.
  2. The fee is a single plan of USD 10.00 per month. There are no plan tiers, free trials, coupons, annual discounts, or seat-based billing.
  3. Consumption tax and other taxes on the displayed price may be calculated and added by the payment provider (Stripe) according to the user's location, etc.
  4. Currency-conversion fees, communication charges, and other costs incidental to using the Service are borne by the user.
  5. The Company may revise fees. If it does, it will provide advance notice by posting on the Service or by other appropriate means.

Article 6 (Payment and Auto-Renewal)

  1. Payment is made by credit card through Stripe's hosted payment screen (browser).
  2. The Subscription is charged at sign-up and, unless cancelled, automatically renews under the same conditions at the end of each billing period, charging at each renewal.
  3. Payment details (card number, etc.) are collected and managed directly by Stripe; the Company does not retain them.
  4. If payment fails, Stripe may retry; if it is not recovered by the end of the billing period, the Subscription becomes inactive.

Article 7 (Subscription Gating of the Save Feature)

  1. Viewing and editing (in-memory operations) are available regardless of sign-in or subscription status.
  2. Using the save feature for artifacts requires being signed in and having an active subscription. If you are not signed in, or your subscription is inactive, expired, or unsubscribed, the save feature is unavailable.
  3. Even offline, within the grace period set by the Company, the save feature may be available based on the last confirmed subscription status. If the grace period is exceeded, re-confirmation of status by reconnecting is required.

Article 8 (Cancellation and Refunds)

  1. Users may cancel the Subscription at any time through Stripe's Customer Portal.
  2. Cancellation takes effect, in principle, at the end of the current billing period (end-of-term cancellation). Paid features remain available until the end of the period.
  3. Due to the nature of digital content and services, no pro-rata refund of already-paid fees is provided even if you cancel mid-term, except where a refund is required by law.
  4. Card changes and checking of billing history / receipts can also be done from Stripe's Customer Portal.

Article 9 (License and Open Source)

  1. The Company grants users a non-exclusive, non-transferable right to use the Service in accordance with these Terms.
  2. Users must not copy, modify, reverse engineer, redistribute, or sublicense the Service beyond what is permitted by these Terms and applicable law.
  3. Where the Service includes open-source software ("OSS"), the respective license terms apply to such OSS and prevail over these Terms.

Article 10 (Intellectual Property)

Intellectual property rights in the Service and in all software, text, images, logos, UI design, and other content provided by the Company in connection with it belong to the Company or its rightful owners. The license under these Terms does not transfer these intellectual property rights to the user.

Article 11 (User Artifacts)

  1. Rights to artifacts a user creates using the Service belong to the user or the rightful owner.
  2. Artifacts are stored only in local files and are not sent to or stored on the Company's servers. The Company does not collect the content of artifacts.
  3. Creation, saving, backup, and management of artifacts are the user's responsibility. The Company bears no responsibility for loss or corruption of artifacts beyond the scope of Articles 15 and 16.

Article 12 (Prohibited Acts)

Users must not engage in the following:

  1. Acts that violate laws or public order and morals
  2. Acts related to criminal activity
  3. Acts that infringe the intellectual property, privacy, reputation, or other rights/interests of the Company, other users, or third parties
  4. Acts that interfere with or improperly access the Service's servers, networks, or authentication/billing infrastructure
  5. Improper use of credentials, improper avoidance of fee payment, or improper circumvention of the subscription gating of the save feature
  6. Reverse engineering, decompiling, etc. of the Service (except where expressly permitted by applicable law)
  7. Directly or indirectly providing benefits to antisocial forces
  8. Other acts the Company reasonably deems inappropriate

Article 13 (Notes on AI Features)

  1. The Service's AI assistance features (AI Co-Pilot, etc.) run on the user's device by default. Only if the user voluntarily selects (opts in to) a cloud LLM are entered prompts, etc. sent to an external AI vendor.
  2. AI output is not guaranteed to be accurate, complete, useful, or fit for a particular purpose. Users must verify and use AI output at their own responsibility.
  3. The Company bears no responsibility for judgments or actions a user takes based on AI output.

Article 14 (Change, Suspension, and Termination of the Service)

  1. The Company may change the content of the Service or suspend or terminate its provision without prior notice to users.
  2. The Company bears no responsibility for damages to users from such change, suspension, or termination beyond the scope of Article 16.
  3. Even if provision of the Service ends, artifacts (local files) the user has already saved locally remain on the user's device.

Article 15 (Disclaimer of Warranties)

  1. The Company does not warrant, expressly or impliedly, that the Service is fit for a user's particular purpose, has expected features/accuracy/usefulness, is free of defects, or does not infringe third-party rights.
  2. The Service is provided AS IS.
  3. The Company bears no responsibility for damages arising from failures, specification changes, or stoppages of external services (Firebase Authentication, Stripe, cloud LLMs, etc.).

Article 16 (Limitation of Liability)

  1. Except in cases of the Company's intent or gross negligence, the Company bears no responsibility for damages to users arising from use of or inability to use the Service.
  2. Even if the Company is liable for any reason, the scope of damages it compensates is limited to ordinary, direct, and actual damages, and is capped at the amount of fees the user paid the Company in the most recent one (1) month preceding the event attributable to the Company.
  3. Where part of this Article is rendered void by the Consumer Contract Act or other mandatory law, the limitations in this Article do not apply within the scope of that mandatory law.

Article 17 (User Responsibilities)

  1. Users must provide, at their own cost and responsibility, the hardware, software, and communication environment necessary to use the Service.
  2. Users must appropriately back up artifacts and other important data at their own responsibility.

Article 18 (Exclusion of Antisocial Forces)

Users represent and warrant that they are not antisocial forces such as organized crime groups and have no relationship with them. If a user breaches this, the Company may suspend use of the Service or suspend or delete the account without any notice.

Article 19 (Suspension of Use / Account Deletion)

  1. If a user breaches these Terms, or the Company reasonably determines there is a risk of breach, the Company may suspend use of the Service or suspend or delete the account without prior notice.
  2. The Company bears no responsibility for damages to users from measures under this Article.

Article 20 (Changes to These Terms)

  1. The Company may change these Terms without the individual consent of users when it deems necessary.
  2. When changing these Terms, the Company will make known the revised content and the effective date by posting on the Service or by other appropriate means.
  3. If a user continues using the Service after the effective date, the user is deemed to have agreed to the revised Terms.

Article 21 (Governing Law and Jurisdiction)

  1. These Terms are governed by the laws of Japan.
  2. Any dispute between the Company and a user concerning the Service or these Terms shall be subject to the exclusive jurisdiction of the Tokyo District Court as the court of first instance.

Article 22 (Severability)

Even if any provision of these Terms or part thereof is held void or unenforceable by law, the remaining provisions and the remaining part of that provision remain fully effective.

Article 23 (Contact)

Your use of the Service is also governed by our Privacy Policy. Seller information is available on the Specified Commercial Transactions notice.