1. Client-Side Computational Architecture & Zero Financial Collection
FeeFlow (accessible at https://feeflowcalculator.com) is engineered as a 100% static, client-side web application. When you input invoice figures, transaction values, gross-up targets, or custom fee overrides, all computations run locally in your browser's JavaScript execution thread.
No transaction amounts, invoice line items, recipient identities, or payout records are ever transmitted to, logged by, or stored on FeeFlow servers or third-party databases.
Any calculation history features available within the interface store data solely in your browser's localStorage. This local cache never leaves your physical hardware and can be cleared instantly at any time via your browser settings.
2. Non-Financial Telemetry & Edge Security
To maintain security, mitigate distributed denial-of-service (DDoS) attacks, and optimize global edge performance, minimal aggregated telemetry is processed:
- Cloudflare Edge Logs: Our infrastructure is served via Cloudflare. Standard routing telemetry (including masked IP addresses, browser user-agent strings, referring URLs, and request timestamps) is processed for DDoS mitigation and bot defense under Cloudflare's ISO 27001 and GDPR-compliant Data Processing Addendum.
- Privacy-Preserving Analytics: We utilize Cloudflare Web Analytics to measure global pageview volume and geographic traffic distribution without storing client identifiers or building behavioral profiles.
- Local Preferences: We use local storage solely to retain your UI theme preference (Light or Dark mode).
3. Advertising & Third-Party Vendor Policies
FeeFlow is funded through non-intrusive advertising provided by Google AdSense. Google, as a third-party vendor, may use cookies (including the DoubleClick cookie) to serve advertisements based on your prior visits to this and other websites across the Internet.
- Opt-Out: You may disable personalized Google advertising at any time by visiting the official Google Ads Settings page or via AboutAds.info.
- EEA Consent Mode: For visitors from the European Economic Area (EEA) and United Kingdom, advertisements are served in compliance with Google's EU User Consent Policy and the IAB Europe Transparency and Consent Framework.
4. International Privacy Rights & Regulatory Alignment
5. Children's Privacy Protection
FeeFlow is designed exclusively for business owners, freelancers, e-commerce merchants, and accounting professionals. We do not knowingly solicit or collect personal information from individuals under the age of 16. If we discover that a minor has provided information, it will be deleted immediately.
6. Contact Data Protection Officer
If you have questions regarding our privacy architecture, data minimization practices, or wish to exercise your statutory privacy rights, contact our engineering desk: