Effective date: July 10, 2026
Last updated: July 10, 2026
Fengcen LLC, a Wyoming limited liability company ("Fengcen," "we," "us," or "our"), provides websites, software applications, online services, AI features, cloud features, accounts, billing, and customer support under the Fengcen brand (collectively, the "Services"). Sliprail is one of the Services.
Fengcen LLC is the controller of personal information covered by this Privacy Policy where applicable law uses that term. This Policy explains what information we collect, where it comes from, how and why we use it, when we disclose it, how long we keep it, and the choices and rights that may be available to you.
A product-specific privacy notice may provide additional details. If it conflicts with this Policy, the more specific notice controls for that product or feature.
We may collect information you provide directly, including:
When you access or use the Services, we may automatically collect:
We may receive information from:
Some Fengcen products process data locally on your device. Installing a product does not by itself cause us to receive the contents of your local files, screenshots, clipboard, camera, microphone, or continuous keyboard input.
A product may locally access or store such data when you enable or use a feature that requires it. Information is transmitted to us or a third party only when an online, sync, sharing, support, AI, search, or connected feature requires transmission or when you otherwise choose to send it. Product-specific notices and in-product settings provide further details.
We may derive information such as account-security risk, likely location, feature preferences, and service performance from the information above. We may also create aggregated or de-identified information that is not reasonably linkable to an individual and use it for analytics, security, research, and product improvement.
We use personal information to:
Where the laws of the European Economic Area, United Kingdom, or another jurisdiction require a legal basis, we rely on one or more of the following:
You may decline to provide optional information. If information is necessary to create an account, complete a purchase, secure the Services, or provide a requested feature, we may be unable to provide that part of the Services without it.
When you use an AI, search, sharing, sync, or connected-tool feature, the content and metadata needed to fulfill your request may be sent to Fengcen and to the providers that power the feature. These providers may process information under their own terms and privacy policies, and their retention practices may differ from ours.
Fengcen does not use the specific content you submit to AI features, or the specific outputs generated from that content, to train Fengcen's own AI models unless we separately ask for and obtain permission. We may use limited operational metadata and aggregated or de-identified information to secure, operate, and improve the Services.
Do not submit confidential, regulated, or sensitive information unless you have the right to do so and have determined that the selected feature and provider are appropriate for that information.
We may disclose information in the following circumstances:
We use providers for hosting, storage, databases, content delivery, analytics, security, anti-abuse verification, identity, payments, tax, email, customer support, and software operations. They may process information only for the services they provide to us or as otherwise permitted by their contracts and applicable law.
When you request a feature powered by an AI model, search service, integration, extension, or connected tool, we disclose the content and metadata reasonably necessary to complete that request.
We disclose transaction information to payment processors, app stores, resellers, tax providers, banks, and fraud-prevention providers as needed to process and administer purchases, subscriptions, refunds, disputes, and compliance.
If you create a shared link, publish content, collaborate, install or connect a third-party tool, or otherwise direct us to disclose information, the selected information may be accessible to recipients, the public, or the relevant third party.
We may disclose information when reasonably necessary to:
We may disclose information for another purpose with your consent or at your direction.
We do not sell personal information for money. We also do not share personal information for cross-context behavioral advertising or process personal information for targeted advertising as those terms are defined by applicable United States state privacy laws.
If our practices change, we will update this Policy and provide any legally required opt-out mechanism before beginning the new practice.
We retain personal information only for as long as reasonably necessary for the purposes described in this Policy, taking into account the nature and sensitivity of the information, the requested Service, account status, security needs, legal obligations, and limitation periods.
For example:
Closing an account removes access and initiates deletion or de-identification of information that is not required for a continuing legitimate purpose. Some information may remain in backups for a limited cycle or be retained for legal, accounting, tax, fraud-prevention, security, dispute, and enforcement purposes. We restrict retained information to those purposes and delete or de-identify it when the applicable need ends.
Data kept only on your device remains under your control and must be removed through the product or device.
We use commercially reasonable technical, administrative, and organizational measures designed to protect personal information. No method of transmission, processing, or storage is completely secure, and we cannot guarantee absolute security. You should use a strong, unique password, protect your devices, and promptly notify us of suspected unauthorized access.
Fengcen is based in the United States. We and our providers may process information in the United States and other jurisdictions where we or they operate. Those jurisdictions may have data-protection laws that differ from the laws where you live.
Where applicable law requires safeguards for an international transfer, we use a legally recognized transfer basis or take other measures required by law, which may include contractual protections. You may contact us for additional information about safeguards relevant to your information.
Depending on your location and how you use the Services, you may have rights to:
Residents of jurisdictions with United States state privacy laws may also have rights to know categories and specific pieces of information, correct, delete, obtain portability, opt out of sale, sharing, targeted advertising, or certain profiling, appeal a denied request, and receive equal service without unlawful discrimination. We do not currently engage in sale, sharing for cross-context behavioral advertising, or targeted advertising as described above.
To submit a request, email support@fengcen.com. We may need to verify your identity and authority before completing a request. An authorized agent may submit a request where permitted by law, but we may require proof of authorization and direct identity verification. We will respond within the period required by applicable law and explain any available appeal process.
Some rights are subject to exceptions, including where information is needed to complete a transaction, protect security, comply with law, preserve legal claims, or exercise free-expression or other rights.
You can control many cookies and similar technologies through browser or device settings. Blocking necessary cookies may prevent account, security, payment, or other core features from functioning.
You may unsubscribe from marketing emails using the link in the message or by contacting us. Even if you opt out of marketing, we may still send non-promotional communications about your account, transactions, security, or material Service changes.
Browser "Do Not Track" signals are not interpreted consistently across the industry. Where required, we honor legally recognized opt-out preference signals for practices to which those signals apply. Because we do not currently sell or share personal information for cross-context behavioral advertising, such signals do not change those practices.
The Services are not directed to children under 13, and we do not knowingly collect personal information from children under 13. If local law requires a higher age for a child to consent to data processing, a parent or legal guardian must provide any required permission. If you believe a child provided information without required permission, contact us so we can take appropriate action.
We may update this Policy to reflect changes in our Services, practices, or legal obligations. The updated Policy will state a new effective date. We will provide additional notice of material changes where required by law. Changes do not reduce rights that have already accrued under applicable law.
Fengcen LLC
You may use the email above for privacy questions, rights requests, and complaints.