Privacy Policy
Last updated: October 4, 2026
This Privacy Policy explains how Yuemas Technology LLC ("we", "us") collects, uses and shares information when you use SizeRun and visit yuemas.com.
1. Information we collect
- Account information: name, email address, company name and password (stored as a one-way hash).
- Billing information: plan, billing status and invoices. Payments are processed by Stripe; we do not receive or store your full card number.
- Marketplace data: when you connect a marketplace account, we receive access tokens and data such as products, listings, prices, orders and payout amounts needed to run the service. Order data may include buyer or shipping details provided by the marketplace.
- Inventory data you enter: style codes, sizes, conditions, quantities, costs and notes.
- Usage and device data: log data, IP address, browser type and pages used, collected to secure and improve the service.
- Communications: messages you send to support.
2. How we use information
To provide and operate the service (including acting on your marketplace accounts as you instruct), process subscriptions, provide support, keep the service secure, detect abuse, communicate with you about your account, and improve our product. We do not use your inventory or sales data to trade or compete with you.
3. How we share information
We do not sell your personal information and do not share it for cross-context behavioral advertising. We share information only with:
- Service providers that help us operate the service (for example cloud hosting, payment processing by Stripe, and email delivery), under confidentiality obligations;
- Marketplaces you connect, as needed to carry out your instructions;
- Authorities, when required by law or to protect rights and safety;
- A successor entity in a merger, acquisition or sale of assets, subject to this Policy.
4. Security
Marketplace credentials are encrypted at rest, data is transmitted over HTTPS, and access to customer data is limited to personnel who need it to operate and support the service. Each customer's data is logically isolated. No system is perfectly secure, but we work to protect your information.
5. Data retention
We keep your data while your account is active. After you close your account we delete or anonymize it within 90 days, except where we must keep records (such as invoices) for legal, tax or accounting purposes.
6. International processing
We are a US company and host the service in the United States. Members of our engineering and support team may access data from other countries to operate and support the service, subject to the safeguards described in this Policy.
7. Your choices and rights
You can access, update or export your data in the app, disconnect marketplace accounts at any time, and ask us to delete your account. Depending on where you live (for example California), you may have additional rights to know, correct or delete personal information and to not be discriminated against for exercising them. To make a request, email [email protected].
8. Cookies
We use cookies and similar technologies that are necessary to keep you signed in and to secure the service. We do not use third-party advertising cookies.
9. Children
The service is not directed to children under 18, and we do not knowingly collect their personal information.
10. Changes
We may update this Policy and will notify you of material changes by email or in the app.