Privacy Policy
Last Updated: October 17, 2026 • Effective Immediately
1. Introduction & Core Commitment
FeeSpotter (“we”, “our”, or “us”) provides high-speed financial calculators, reverse margin solvers, and catalog audit tools for e-commerce sellers. We believe your store financial data, SKU pricing, and catalog spreadsheets belong strictly to you.
2. In-Browser Client-Side Processing
Our batch catalog auditor and individual calculator functions execute entirely on your device via client-side JavaScript. When you upload a CSV spreadsheet or evaluate pricing, your data is never uploaded, stored, or analyzed on remote servers. All calculations occur inside your web browser.
3. Information We Collect
When you optionally create an account or sign in using Clerk Authentication, we store basic profile identifiers (your email address, user display name, and authentication token) necessary to maintain your login session and Pro membership status. We do not store credit card numbers; payment processing and subscription billing are securely handled through PCI-compliant payment processors and Merchant of Record platforms (including Stripe and Lemon Squeezy).
4. Cookies & Local Storage
We utilize local storage on your device solely to remember your preferred calculator inputs, active marketplace view, and UI preferences across sessions. We may utilize standard session cookies to preserve your signed-in state.
5. Advertising & Third-Party Services
FeeSpotter displays non-intrusive contextual banner advertisements via Google AdSense. Google AdSense and third-party advertising vendors may use cookies to serve ads based on your prior visits to this website or other internet sites. You may opt out of personalized advertising by visiting Google Ad Settings (www.aboutads.info).
6. Affiliate Disclosure
FeeSpotter participates in select partner and affiliate programs (including EverBee, Kalodata, and Amazon Associates). Some links on this site may be affiliate links. If you click a sponsor card and choose to purchase a subscription or product, FeeSpotter may receive an affiliate commission at no additional cost to you. We strive to highlight reputable, battle-tested tools and services commonly utilized by marketplace sellers to maximize profitability.
7. Data Protection Rights (GDPR & CCPA)
You have the right to request access to, correction of, or deletion of any personal account data associated with your user profile. To exercise these rights or request complete profile deletion, please reach out via our contact page or at support@feespotter.com.
8. Changes to This Policy
We may update this Privacy Policy from time to time to reflect modifications in our features or legal obligations. The revised version will always be accessible on this page with an updated revision date.