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Privacy Policy
Amazon Price Tracker browser extension · Last updated: January 15, 2026 · Version 1.0.2
1. Overview
Amazon Price Tracker (Amazon Fiyat Takip Sistemi) is a free Chrome browser extension that
tracks price history for products on Amazon.com.tr and other Amazon marketplaces. This
document explains what data the extension processes, why, and your rights under
Turkey's KVKK (Personal Data Protection Law No. 6698), the EU GDPR (where applicable),
and Chrome Web Store program policies.
2. Data Controller & Contact
- Data Controller: Asim Emin Kayır (independent developer)
- Email: asimmirzac@gmail.com
- Extension name: Amazon Fiyat Takip Sistemi
- Chrome Web Store item ID:
inmcpdjljnhhboakhhdeecomcmombakd
3. Architecture Summary
The extension operates in a cloud-first model: your tracking list and
price history are stored on Cloudflare D1 (serverless database). Your browser's IndexedDB
is used only as an offline cache and an outbox queue for writes that
could not yet be sent to the cloud. As a result, your tracking list and history are
preserved even if you clear browser data, change devices, or sign in from a different
computer.
4. Data Collected
4.1 Cloud-stored (tied to an anonymous identifier)
| Data | Purpose |
|---|
Anonymous user ID (UUID generated by crypto.randomUUID() on first install) | Associate your cloud tracking list with you + rate-limiting |
| ASIN, marketplace, product title, image URL, category | Identify the product and display it in the UI |
| Price history (with UTC timestamps) | Charts and statistics |
| Alarm parameters (target price, percentage threshold) | Price alerts |
| Notes, tags, groups | Personal organization |
4.2 Anonymous Shared Pool (shared with all users)
| Data | Purpose |
|---|
| ASIN, marketplace, price, currency, UTC timestamp, stock status | Build crowd-sourced price history |
| Anonymous user ID (only for spam protection) | Prevent the same user from gaming submissions |
When collection happens: When you visit an Amazon product page, the price
is read from the page DOM and submitted to the pool. Periodic checks of your tracked
products also contribute to the pool.
4.3 Stored Only on Your Device (never sent to the cloud)
- Notification history — price-drop / stock-in notifications are shown at the OS level on that device only; they are not re-synced.
- Activity log (for debugging, last 250 entries)
- Extension settings (theme, sound, night mode) — propagated only across your own Chrome profile via
chrome.storage.sync.
4.4 Data That Is Never Collected
🚫 The extension does not collect, store, or transmit:
IP addresses · names · email addresses · phone numbers · browsing history · items you add to your cart ·
purchase information · payment details · Amazon account data · identity information · location data ·
device fingerprints · cookies · third-party advertising IDs.
5. Purposes of Processing
- Track and visualize price history of Amazon products
- Send notifications when your defined price thresholds are reached
- Provide up-to-date price data without overloading Amazon, thanks to the shared pool
- Sync your tracking list across your devices
- Protect against spam and manipulation (rate-limit, outlier detection)
6. Third-Party Sharing
Your data is not shared with advertising networks, analytics companies, or
any other third party. The server infrastructure consists solely of a single Cloudflare
Workers + D1 environment that serves only this extension. When you click an affiliate
link the destination is Amazon, which is subject to its own privacy policy
(Amazon Privacy Notice).
7. Data Security
- All server traffic is encrypted via HTTPS (TLS 1.3)
- The user ID travels only in the
X-User-Id HTTP header (not in body, to avoid log leaks)
- Rate-limiting: 30 requests/minute per user (enforced by Cloudflare Workers)
- Outlier detection: submissions deviating from the median by ±3× are rejected (manipulation protection)
- Local data is isolated in the browser's extension sandbox
- No authentication: the extension never asks for email or account credentials
8. Retention Periods
| Cloud tracking list | Until you remove the product |
| Cloud price history (pool) | Unlimited (history becomes more valuable over time) |
| Local price-history cache | Configurable (default: 365 days) |
| Notifications (on device) | Until you clear them |
| Activity log (on device) | Last 250 entries |
9. Your Rights
- Right of access: From Settings → Data Management you can export all your data as JSON or CSV.
- Right to rectification: Your notes, tags, and alerts can be edited any time.
- Right to erasure ("forgotten"): Settings → Data Management → "Delete All Data" erases all your local and cloud data. Anonymous contributions to the shared pool cannot identify you and therefore remain; if you want full deletion from the cloud, please email us.
- Right to object: The shared pool is essential to the extension's core service and cannot be disabled. Uninstalling the extension stops all data transmission.
- Right to complain to a supervisory authority: KVKK (Turkey) kvkk.gov.tr, or your local EU data protection authority.
10. Affiliate Disclosure
The extension uses a fixed Amazon Associates affiliate tag
(redirectproductaft23415-213423-21) on every Amazon link it generates.
If you make a purchase via such a link, Amazon pays a small commission to the developer
at no extra cost to you. This is what keeps the extension free and maintained.
No auto-redirect occurs; links open only on user action; a warning is shown if the
displayed price is older than 24 hours.
11. Children's Privacy
This extension is not directed at children under 13 and does not knowingly collect data
from them. If you are a parent and believe your child has used this extension, please
contact us and we will erase the data.
12. Changes to This Policy
We may update this policy from time to time. Significant changes will be announced
through the extension's update notifications. The "Last updated" date at the top of
this page reflects every revision.
13. Contact
For questions about this policy, your personal data, or KVKK / GDPR matters: