Privacy Policy
Last Updated: October 18, 2026 • Effective Date: October 18, 2026
1. Introduction & Core Philosophy
At Sloper.Fit ("we", "us", or "our"), accessible via https://sloper.fit and the app studio workspace at https://app.sloper.fit, we are dedicated to respecting your privacy and protecting any personal information you provide.
Our platform is architected on a principle of data minimization and client-side processing: our parametric CAD drafting algorithms execute directly within your web browser. Your private anatomical measurements belong solely to you. We do not sell, rent, or monetize your body measurements or client files.
2. Information We Collect
A. Anonymous Browsing & Free Downloads
You can browse our website, explore pattern specifications, and download our library of 70 standard size printable pattern templates (PDF, SVG, DXF) completely anonymously. We do not require registration or credit card information for free pattern downloads.
B. Account & Authentication Information
When you register an account or log into our web application workspace (app.sloper.fit), we collect:
- Your email address and unique user identifier.
- Profile name or initials (if provided).
- Authentication session tokens managed securely via encrypted HTTP-only cookies.
C. Measurement & Project Drafting Data
When using our interactive CAD studio, the anatomical measurements (bust, waist, hip, scye depth, back width) and drafting options (ease, seam allowances, darts) you enter are stored locally in your browser’s localStorage. If you choose to synchronize projects with the cloud Project Vault, project configurations are stored securely in our database (Cloudflare D1) associated with your user ID.
D. Payment & Transaction Information
If you purchase export passes or subscriptions, transactions are processed directly by our PCI-compliant third-party payment processors (such as Stripe or LemonSqueezy). Sloper.Fit never collects, sees, or stores your full credit card number or bank details. We only receive confirmation of payment, transaction IDs, and license status.
3. How We Use Your Information
- Delivering CAD Geometry: Computing exact 1:1 scale printable PDFs, SVG vectors, and AAMA DXF files tailored to your specifications.
- Synchronizing Your Project Vault: Allowing you to save, retrieve, edit, and duplicate custom sloper drafts across your devices.
- Customer Support & System Communication: Responding to support inquiries, transaction receipts, and essential platform announcements.
- Service Security & Fraud Prevention: Protecting against unauthorized access, automated abuse, and denial-of-service threats.
Client-Side Calculation Architecture
Unlike traditional cloud rendering tools that transmit every line and coordinate to external servers, Sloper.Fit’s geometric CAD solver runs 100% locally in your browser using JavaScript and Web APIs. Your custom pattern pieces are constructed on your device, ensuring maximum confidentiality for bespoke tailors, bridal designers, and private individuals.
5. Cookies and Local Storage
We use strictly necessary browser storage mechanisms:
- Local Storage: To preserve your workspace draft state, zoom preferences, unit toggles (cm vs. inches), and unsaved project measurements directly on your device.
- Session Cookies: To keep you securely authenticated while navigating the platform.
- Privacy-Respecting Analytics: We do not use intrusive cross-site advertising pixels or tracking cookies. Aggregate server analytics measure general page views to monitor infrastructure performance.
6. Third-Party Service Providers
We partner with reputable infrastructure providers who operate under strict data protection standards:
- Cloudflare Inc.: Global Content Delivery Network (CDN), DDoS protection, and serverless edge storage (Cloudflare D1 & Workers).
- Payment Gateway: Stripe / Merchant of Record for PCI-DSS compliant payment processing.
7. Your Data Rights (GDPR & CCPA Compliant)
Regardless of your location, we afford all users the rights to:
- Access: Request a copy of any personal data associated with your account.
- Correction: Update or modify any incorrect account details.
- Erasure ("Right to Be Forgotten"): Delete your account and all associated cloud-saved projects from our database at any time.
- Data Portability: Export all project drafts in open formats (DXF, SVG, PDF, JSON).
To exercise any of these rights, contact our privacy team at privacy@sloper.fit.
8. Contact Us
If you have questions, concerns, or requests regarding this Privacy Policy, please reach out to us: