Privacy Policy

Amazon Price Tracker browser extension · Last updated: July 8, 2026 · Version 1.2.0

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: Asım Mirza Çiftler (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.
Your Telegram bot token and chat ID (only if you enable the Telegram notification channel) — these credentials are stored only on your device in chrome.storage and are never sent to the extension's servers.

4.4 Anonymous Usage Statistics (on by default, can be disabled)

Data	Purpose
Daily activity signal: anonymous user ID (UUID) + extension version + UI language + UTC day	Measure how many users actively use the extension (at most 1 record per day)
Affiliate link click: which UI surface (popup / notification / share) + product ASIN and marketplace	Understand which features work and improve the extension

You are in control: This data goes only to the first-party server (the same Cloudflare Worker); no third-party analytics service is used. Turning off Settings → Privacy → "Anonymous Usage Statistics" stops all usage data — the extension keeps working exactly the same. Click records are automatically deleted after 180 days, activity records after at most 400 days.

4.5 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)
Measure active-user counts and feature usage (anonymous usage statistics — can be disabled, see 4.4)

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).

Optional Telegram notification channel: If you enable Telegram notifications yourself (off by default), the generated notification text (product title, price, and product link) is sent directly from your browser to the Telegram bot you configured (api.telegram.org). This data does not pass through the extension developer's servers and, once sent, is subject to Telegram's own privacy policy. Your bot token and chat ID are stored only on your device. This feature is entirely optional; the host permission (api.telegram.org) is requested only when you turn the channel on — if you do not, no permission is granted and no data is sent to Telegram.

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
Usage statistics — link click records	180 days (auto-deleted)
Usage statistics — daily activity records	At most 400 days (auto-deleted)

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. Anonymous usage statistics, however, can be turned off from Settings → Privacy. 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:

Email: asimmirzac@gmail.com
GitHub: github.com/Asimmimx/amazonfiyattakipeklentisi