Privacy Policy
KDP Scout — Privacy Policy
Last updated: July 2, 2026
KDP Scout is now AuthorScout. This Privacy Policy covers the AuthorScout browser extension (formerly known as KDP Scout) and all related services and websites, including kdpscout.com and app.kdpscout.com. References to ‘KDP Scout’ and ‘AuthorScout’ refer to the same product and the same data practices.
KDP Scout (“we,” “our,” or “us”) is a Chrome browser extension and web service that helps Amazon KDP publishers analyze book market data. This privacy policy explains what data we collect, how we use it, how we store it, and how you can control it.
1. Data We Collect
Account Information
When you create a KDP Scout account, we collect:
- Email address — used for account login, password resets, and service communications
- Password — securely handled by our authentication provider (Supabase); we never store or see your plaintext password
Usage Data
When you use KDP Scout features, we collect:
- Feature usage counts — how many BSR marketplace checks, deep dives, and fallback requests you make each month (used to enforce plan limits)
- Tracked books — the ASINs and titles of books you choose to track (stored so we can show you tracking history)
- BSR check history — records of cross-marketplace BSR lookups you perform (stored for your reference)
Device and Session Information
- Device ID — a randomly generated identifier created when you install the extension, stored locally in your browser and on our server. This is NOT a hardware fingerprint. It is used solely to enforce our one-device-per-account policy.
- IP address — logged temporarily during login for brute-force protection (automatically deleted after 15 minutes)
- User agent — your browser type, logged at login for account security monitoring
Payment Information
- Payments are processed by LemonSqueezy (our merchant of record). We never receive, see, or store your credit card number, bank details, or full payment information. LemonSqueezy handles all payment processing and tax compliance. We only receive confirmation of your subscription status (active, cancelled, or expired) and your LemonSqueezy customer ID.
- Feedback and feature requests: if you send feedback or a feature request through the extension, we receive and store the message you write, along with your account email, so we can respond and improve the product.
Data We Do NOT Collect
- We do not collect your browsing history
- We do not track which Amazon pages you visit
- We do not collect any personal information beyond your email address
- We do not collect health, financial, or location data
- The AuthorScout extension does not use cookies or tracking pixels. The kdpscout.com website uses only standard WordPress session cookies for basic functionality — no advertising or analytics cookies.
- We do not run any analytics or advertising SDKs in the extension
- The extension’s local scraping feature (reading book data from Amazon pages you are actively viewing) runs entirely in your browser — no data from this process is sent to our servers unless you explicitly use a cloud feature (Deep Dive, BSR Marketplace, Book Tracker, or Auto-Fallback)
2. How We Use Your Data
We use collected data only to provide and improve the KDP Scout service:
| Data | Purpose |
|---|---|
| Email address | Account authentication, password resets, service notifications |
| Feature usage counts | Enforcing monthly plan limits (e.g., 200 deep dives/month for Pro) |
| Tracked books | Displaying your book tracking dashboard and BSR/price/review history charts |
| BSR check history | Showing you results of marketplace checks you previously performed |
| Device ID | Ensuring one active device per account to prevent account sharing |
| IP address (temporary) | Preventing brute-force login attacks |
| Subscription status | Determining whether you have Free or Pro access |
We do not use your data for advertising, profiling, or any purpose unrelated to operating the KDP Scout service.
3. How We Store Your Data
- Account data, usage data, and tracked books are stored in a secure PostgreSQL database hosted by Supabase (cloud infrastructure based in the United States). All data is protected by Row Level Security policies, meaning each user can only access their own data.
- Session tokens and device ID are stored locally in your browser using Chrome’s
chrome.storage.localAPI. - Temporary caches (e.g., recent BSR lookups, homepage content) are stored in Redis on our server and automatically expire after a set period (1 to 24 hours depending on the data type).
- All communication between the extension and our servers uses HTTPS encryption.
- Passwords are handled entirely by Supabase Auth using industry-standard hashing — we never store or transmit plaintext passwords.
Data Retention
| Data | Retention Period |
|---|---|
| Account information (email, profile) | Until you delete your account |
| Feature usage tracking | 12 months, then automatically deleted |
| Tracked books and snapshots | Until you remove the book or delete your account (snapshots older than 365 days are automatically deleted) |
| Profitable titles data | 30 days (older entries automatically deleted) |
| Login IP addresses (brute-force protection) | 15 minutes (automatically expires) |
| Payment/subscription records | Until you delete your account |
4. How We Share Your Data
We do not sell, rent, or trade your personal data to any third party.
We share data only with the following service providers, solely to operate the KDP Scout service:
| Provider | Data Shared | Purpose |
|---|---|---|
| Supabase (database & authentication) | Email, hashed password, usage data, tracked books | Hosting our database and handling user authentication |
| LemonSqueezy (payment processor) | Email address (for matching payments to accounts) | Processing subscription payments |
| Railway (server hosting) | Server logs (may contain IP addresses) | Hosting our API server |
| Keepa (Amazon data provider) | Book ASINs (no user data) | Retrieving book market data (BSR history, pricing, etc.) |
None of these providers receive data beyond what is necessary for their specific function. We do not share any user data with Amazon or any advertising network.
We may disclose data if required by law or to protect against fraud or security threats, but we have never received such a request.
5. Your Rights and Choices
Access Your Data
You can view your tracked books, usage counts, and account information directly within the extension.
Delete Your Account and Data
You can permanently delete your account and all associated data at any time:
- Open the KDP Scout extension
- Click the gear icon (Settings)
- Click “Delete Account”
- Type DELETE to confirm
This immediately and permanently removes: your account, tracked books, usage history, BSR check records, and all other data associated with your account. This action cannot be undone.
Alternatively, you can email us at abdulazeezquadri04@gmail.com to request account deletion.
Export Your Data
You can request a full export of your tracked books and usage data by emailing us at abdulazeezquadri04@gmail.com. We will provide the export within 30 days.
Cancel Your Subscription
You can cancel your Pro subscription at any time through the extension’s Settings panel. Your Pro access continues until the end of your current billing period.
6. Children’s Privacy
KDP Scout is a business tool designed for adult publishers and authors. We do not knowingly collect data from children under 13. If you believe a child has provided us with personal data, please contact us and we will delete it.
7. Changes to This Policy
We may update this privacy policy from time to time. If we make significant changes, we will notify users through the extension’s Home tab or via email. The “Last updated” date at the top of this page reflects the most recent revision.
8. Contact Us
If you have questions about this privacy policy or your data, contact us at:
Email: abdulazeezquadri04@gmail.com Website: https://kdpscout.com
9. Disclosures
- KDP Scout is not affiliated with, endorsed by, or connected to Amazon. Amazon and Kindle Direct Publishing are trademarks of Amazon.com, Inc.
- KDP Scout is not affiliated with Google or the Chrome Web Store.
AuthorScout’s use and transfer of information received through Chrome extension APIs adheres to the Chrome Web Store User Data Policy, including its Limited Use requirements. We use data obtained through the extension solely to provide and improve the extension’s single purpose (book market research). We do not sell user data, do not use it for advertising, and do not allow humans to read it except with your consent, for security purposes, or to comply with applicable law.