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Terms & Privacy
The terms that govern Arpelier and a clear account of how the Service handles information.
Effective date: August 5, 2026
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Operator: Arpelier
At a Glance
These principles summarize how Arpelier approaches your work, project access, and technical results.
- You retain ownership of the projects and content you create or upload. Arpelier does not claim ownership of them.
- You choose whether a project is Private or Public and whether a Public project is shown in Explore. We explain and apply those settings in the Service.
- Private projects are not made available to general users. Data access is limited to what is needed to operate, secure, troubleshoot, support, and comply with legal obligations.
- We apply reasonable administrative and technical safeguards and work to improve the Service’s stability, security, and technical usefulness.
- Arpelier helps people understand, review, and communicate process–structure relationships. Its visualizations do not guarantee manufacturability, yield, device performance, reliability, or safety.
- Important research, design, investment, or manufacturing decisions require independent professional review, experiments, simulations, and validation. Keep a separate copy of important data.
This summary is provided for convenience. The specific rights and obligations below govern your use of the Service.
Terms of Service
These Terms explain what Arpelier provides, what we commit to, and the responsibilities that come with using the Service.
1. Purpose and Scope
Arpelier is a web-based workspace for creating and managing semiconductor process flows, calculating and visualizing resulting structures in 3D, and saving, reviewing, or sharing related projects.
By accessing or using the Service, you agree to these Terms. The Privacy Policy below separately explains how personal information and project data are handled.
2. Our Commitments
- We do not claim ownership of projects or content that users create or upload.
- We provide visibility controls and apply the selected Private, Public, and Show in Explore settings. Private projects are not made available to general users.
- We limit operator access to people and purposes needed for service operation, security, incident or error response, user-requested support, recovery or migration, abuse prevention, and legal compliance.
- We apply reasonable administrative and technical safeguards and continue improving service stability, security, and technical accuracy.
- When a material change or extended interruption is expected, we will provide notice when reasonably practicable, except when urgent security, outage, or legal circumstances make advance notice impracticable.
- If we confirm a security incident or data loss, we will investigate and take reasonable steps to contain the issue, reduce harm, restore service where feasible, and provide notices required by applicable law.
3. Using the Service and Guest Access
Visitors may explore official examples, Explore, and Public projects available to them without signing in. Guest access does not provide an account-based private workspace.
Signing in is required for cloud saving, project management, collaboration, sharing controls, and other account-based features. The features available without an account may change as the Service evolves.
4. Accounts and Security
- Keep your account information and authentication methods secure and reasonably up to date.
- Do not transfer, lend, or share your account or use another person’s account without authorization.
- Tell Arpelier promptly at contact@arpelier.com if you become aware of unauthorized account use or another security concern.
5. User Content and Ownership
You retain the rights you hold in projects, process flows, masks, descriptions, images, settings, and other content you create or upload. Arpelier does not claim ownership of User Content.
You grant Arpelier a limited, non-exclusive permission to host, store, process, render, synchronize, transmit, share, secure, maintain, and recover User Content only as needed to operate the Service, apply your settings, provide features you request, and meet legal obligations. This permission does not transfer ownership.
Private User Content is not licensed to Arpelier for general advertising, public marketing, or public AI-model training. You must have the rights and permissions needed for content you upload or share and must not infringe intellectual property, privacy, confidentiality, or other rights.
6. Project Visibility and Sharing
Arpelier displays the meaning of each visibility setting in the Service and applies the setting you choose.
- Private: available to the owner and collaborators the owner explicitly invites, subject to the limited operational access described in these Terms and the Privacy Policy.
- Public: available to anyone with the project link, including visitors who are not signed in.
- Public + Show in Explore: may also appear in Explore, search, public profiles, and other public areas without a direct link.
Before making a project Public, enabling Show in Explore, or sharing a link, review both the setting and the content included. Changing these settings expands the audience that can access the project.
7. Sensitive Information and Organizational Policies
Arpelier processes project data as described in the Privacy Policy and does not make Private projects available to general users. Even so, the Service uses external cloud infrastructure and a Private setting does not replace your legal authority or an approval required by your organization.
- Follow the security, confidentiality, and data-handling rules of your company, school, research institution, clients, and other relevant third parties.
- Do not upload trade secrets, unpublished process conditions, customer information, personal identifiers, or other restricted information unless you are authorized to do so.
- Check for sensitive information before making a project Public, enabling Show in Explore, or sharing a project link.
8. Technical Results and Appropriate Use
Arpelier is designed to help people visualize, understand, teach, sketch, review, and communicate relationships between semiconductor processes and structures.
We calculate and visualize structures from process inputs and continue improving the accuracy and usefulness of our models and algorithms. Arpelier is not a professional TCAD or manufacturing-validation system and does not reproduce every physical or chemical phenomenon or manufacturing variation.
Displayed or generated results do not guarantee actual manufacturability, process yield, device performance, reliability, safety, or fitness for a particular purpose.
Use independent professional judgment, experiments, detailed simulations, and appropriate validation before making important research, design, investment, safety, or manufacturing decisions.
9. Prohibited Conduct
- Do not violate applicable law or the rights, confidentiality, privacy, or intellectual property of others.
- Do not access accounts, projects, systems, or data without authorization or bypass access controls.
- Do not interfere with normal operation, introduce malicious code, or impose an unreasonable load through automation or excessive requests.
- Do not use the Service to distribute unlawful, deceptive, or harmful material.
10. Service Changes, Suspension, and Discontinuation
We may change, limit, or temporarily suspend features for service improvement, maintenance, security, technical, legal, or operational reasons.
If a change materially affects users or an extended interruption is expected, we will provide notice when reasonably practicable. Advance notice may not be possible for urgent outages, security incidents, legal requirements, or events beyond reasonable control.
If the Service is discontinued, we will, when reasonably practicable, give advance notice and time to review or retrieve data using the features then available. This is not a promise of a particular export format or a guarantee that recovery will always be possible.
11. Limitation of Liability
The commitments above describe how Arpelier operates, but no internet or modeling service can eliminate every interruption, error, security risk, or data-loss risk.
- To the extent permitted by applicable law, the Service is provided without a guarantee of uninterrupted or error-free operation, permanent availability, or fitness for a particular purpose.
- To the extent permitted by applicable law, Arpelier is not responsible for loss caused by third-party service failures, events beyond reasonable control, User Content or visibility choices, or professional or business decisions made without independent validation of Arpelier results.
- To the extent permitted by applicable law, Arpelier is not liable for indirect, incidental, or unforeseeable loss. Keep a separate copy of important project data.
These limitations do not apply to Arpelier’s intentional misconduct or gross negligence, or to any liability that applicable law does not allow to be excluded or limited.
12. Changes to These Terms
We may update these Terms to reflect changes in the Service or applicable law. The effective date will be shown on this page, and material changes will be announced within the Service or through another reasonable channel.
13. Contact and Governing Law
Questions about these Terms may be sent to contact@arpelier.com.
These Terms are governed by the laws of the Republic of Korea. Mandatory local laws that apply to a user remain effective to the extent required.
Privacy Policy
This Policy explains what information Arpelier handles, why it is needed, who may access it, and how users can make requests.
1. Information We Collect
Depending on how you use the Service, Arpelier may collect or process the following information.
Account and authentication information
- Email address, name or display name, and profile image.
- Authentication provider, sign-in method, and provider identifier when using Google, GitHub, or Email through Supabase Auth.
Project and collaboration information
- Project titles, descriptions, notes, process flows, materials, masks, images, settings, generated structures, and related project data.
- Private or Public status, Show in Explore setting, collaborators, permissions, share links, and access requests.
Usage, device, and log information
- Access and event times, feature actions, project identifiers involved in an event, session or anonymous identifiers, and diagnostic metadata.
- IP address, browser or device information, user agent, and error or operational logs that service providers receive or that are needed to operate and secure the Service.
Support information
- Reply email, inquiry category, subject, message, current page information, and any project link or attachment you choose to include.
2. How We Use Information
- Provide authentication, accounts, project storage, loading, synchronization, collaboration, and sharing.
- Apply Private, Public, and Show in Explore settings and operate public project discovery.
- Operate, secure, monitor, diagnose, recover, maintain, and improve the Service.
- Respond to support requests, investigate abuse, and meet legal obligations.
Arpelier uses its own service event system, stored in Supabase, for internal operation and quality analysis. The Service also uses browser storage for sign-in state, language, theme and other preferences, and session or anonymous identifiers. Arpelier does not use this information for third-party advertising or sell it to advertising or analytics vendors.
3. Project Data and Operator Access
Private projects are not made available to general users. Public projects are available by link, and Public projects with Show in Explore enabled may also appear in public discovery areas.
Authorized operators may access account, project, or log data only when needed for service operation, security or incident response, error investigation, support requested by a user, recovery or migration, abuse prevention, or legal obligations. Access is limited to the people, purpose, and scope reasonably needed for the task.
A project link is added to a support request only when the user selects that option or otherwise provides it. Including a link does not change a project’s visibility or grant access beyond its existing permissions. If additional access or information is needed, Arpelier may ask the user to provide it.
4. Service Providers and International Processing
Arpelier relies on the following providers to operate the Service. They may process information only in connection with the functions they provide.
- Supabase: authentication, database, file storage, and service event storage.
- Vercel: hosting, deployment, content delivery, and server functions.
- Resend: support and notification email delivery.
- Google and GitHub: authentication when a user chooses the corresponding sign-in method.
These providers may process information outside your country. The primary Supabase processing region currently configured for Arpelier is Southeast Asia (Singapore). Processing locations and providers may change as infrastructure changes, and material changes will be reflected in this Policy.
5. Retention and Deletion
Arpelier keeps information only for as long as reasonably needed for the purposes in this Policy. The period depends on the type of information, whether an account or project remains active, operational and security needs, user requests, disputes, and legal requirements.
- A project owner can delete an individual project through the Service.
- Account deletion and related data deletion may be requested at contact@arpelier.com. The current Service does not provide a self-service account-deletion control.
- Support records and service logs are kept for as long as reasonably needed to respond, operate, secure, improve, and handle related disputes or legal duties.
Deletion may take additional time in provider systems, residual copies, or records that must be retained by law. Arpelier does not promise a fixed backup or residual-copy deletion schedule. Information retained for legal or security reasons is separated or restricted where reasonably appropriate and deleted when that need ends.
6. Security
Arpelier applies reasonable administrative and technical safeguards, including access controls that distinguish owners, invited collaborators, public access, and authorized operators.
No internet-based service can guarantee absolute security. If a security incident or data loss is confirmed, Arpelier will investigate and take reasonable steps to contain the issue, reduce harm, and provide notices required by applicable law.
7. Sharing and Sale of Information
Arpelier does not sell personal information and does not disclose it for third-party advertising or ad targeting.
Information may be disclosed to the service providers above, at a user’s direction, to protect the Service and its users, or where required by law. Public project content is disclosed according to the visibility settings selected by its owner.
8. Your Rights
Subject to applicable law, users may request access to, correction or deletion of, or restriction of processing of their personal information, and may request account deletion. Arpelier may need to verify the requester’s identity and may retain information where law permits or requires it.
Send requests to contact@arpelier.com.
9. Changes to This Policy
We may update this Policy to reflect changes in law, the Service, or our providers. The effective date will be shown on this page, and material changes will be announced within the Service or through another reasonable channel.
10. Contact
For privacy questions or requests, contact Arpelier at contact@arpelier.com.
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