Privacy Policy
Last updated: February 25, 2026
1. Introduction
BillSlayer (“we,” “us,” or “our”) is committed to protecting your privacy. This Privacy Policy explains what data we collect, how we use it, and your rights regarding that data when you use billslayer.app (the “Service”).
2. Data We Collect
Account Information
- Email address - used for authentication (magic link login) and account communication
Bill and Negotiation Data
- Bill details - provider name, category, current and new monthly amounts that you enter
- Research data - questionnaire responses, competitor rates researched
- Call session data - call duration, playbook selected, negotiation category, call outcomes
- Savings confirmations - confirmed rate reductions and associated fee calculations
Call Audio and Transcripts
- Audio processing - during active calls, your device microphone captures audio which is sent to Google Gemini for real-time AI coaching. Audio is processed in real time and is not stored on our servers after the session ends.
- Transcripts - speech-to-text transcriptions generated during calls are stored as part of your call session record to enable savings detection and call history review.
Payment Information
- Payment card details are collected and processed exclusively by Stripe. We never see, store, or have access to your full card number, CVC, or expiration date. We receive only a confirmation of payment status and the last four digits of your card for display purposes.
Usage Data
- We collect standard web analytics data including pages visited, features used, and session duration to improve the Service. We do not use third-party tracking cookies.
3. How We Use Your Data
- Provide the Service - power AI coaching, research, playbook recommendations, and savings tracking
- Process payments - calculate and collect success fees via Stripe
- Improve the Service - analyze aggregate usage patterns to improve coaching quality and playbook data
- Communicate with you - send authentication emails, savings reminders, and service updates
We do not sell your personal data to third parties. We do not use your data for advertising targeting.
4. Third-Party Services
We share data with the following third-party services, each under their own privacy policies:
| Service | Purpose | Data Shared |
|---|---|---|
| Supabase | Authentication and database | Email, bill data, call sessions, savings records |
| Stripe | Payment processing | Email, payment amounts, payment card details (handled directly by Stripe) |
| Google Gemini | Real-time AI coaching | Call audio (real-time streaming, not stored), negotiation context |
| Vercel | Hosting and deployment | Standard web request data (IP address, user agent) |
5. Data Retention
- Account data - retained while your account is active and for 30 days after deletion request
- Call audio - processed in real time only; not retained after the call session ends
- Call transcripts and session data - retained while your account is active
- Payment records - retained for 7 years for tax and legal compliance
6. Your Rights
You have the right to:
- Access - request a copy of all personal data we hold about you
- Correction - update or correct inaccurate personal data
- Deletion - request deletion of your account and associated data (subject to legal retention requirements)
- Data portability - receive your data in a structured, machine-readable format
- Opt out - withdraw consent for non-essential data processing at any time
To exercise any of these rights, contact us at privacy@billslayer.app. We will respond within 30 days.
7. Data Security
We implement industry-standard security measures to protect your data, including HTTPS encryption for all data in transit, row-level security in our database ensuring users can only access their own data, and PCI-compliant payment processing through Stripe. See our Security page for details.
8. Children's Privacy
BillSlayer is not intended for use by anyone under 18 years of age. We do not knowingly collect personal data from children. If we learn we have collected data from a child under 18, we will delete it promptly.
9. California Residents (CCPA)
If you are a California resident, you have additional rights under the California Consumer Privacy Act (CCPA), including the right to know what personal information we collect and the right to request deletion. We do not sell personal information. To make a CCPA request, email privacy@billslayer.app.
10. Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of material changes by updating the “Last updated” date above and, for significant changes, by email notification.
11. Contact
Questions about this Privacy Policy? Contact us at privacy@billslayer.app.