Third-Party Services

Overview

TagDrop uses carefully selected third-party services to provide a secure, reliable price tracking experience. This page explains what services we use and how they handle your data.

1. Firebase (Google Cloud)

Purpose: Authentication, database, hosting, and cloud functions

Data Shared:

• Email address for authentication
• Tracked item data (URLs, prices, product info)
• User preferences and settings

Privacy Policy: firebase.google.com/support/privacy

2. Stripe

Purpose: Payment processing for subscriptions and donations

Data Shared:

• Email address
• Payment information (handled directly by Stripe - we never see your full card number)
• Transaction history

Privacy Policy: stripe.com/privacy

3. Apple App Store

Purpose: Payment processing for iOS in-app subscriptions

Data Shared:

• Store account and payment information handled directly by Apple - we never see card details
• Subscription transaction IDs and purchase status

Privacy Policy: apple.com/legal/privacy

4. Google Play

Purpose: Payment processing for Android in-app subscriptions

Data Shared:

• Google Play account and payment information handled directly by Google - we never see card details
• Subscription transaction IDs and purchase status

Privacy Policy: policies.google.com/privacy

5. RevenueCat

Purpose: Mobile subscription status management — receives webhook events from Apple App Store and Google Play to track subscription state. Does not process payments directly.

Data Shared:

• App user identifier (Firebase UID or RevenueCat app user ID)
• Subscription product ID, tier, and status
• Subscription event timestamps

Privacy Policy: revenuecat.com/privacy

6. Expo (EAS)

Purpose: Mobile app building and distribution

Data Shared:

• App crash reports and diagnostics
• Device information for compatibility

Privacy Policy: expo.dev/privacy

7. Google Safe Browsing API

Purpose: Website safety verification for Trust Ratings

Data Shared:

• URL hashes of websites you track (not full URLs)
• No personal information is shared

How It Works: We check tracked URLs against Google's database of known malicious sites. This helps us identify potentially dangerous websites and warn you before you make purchases.

Privacy Policy: policies.google.com/privacy

8. BuiltWith API

Purpose: Website technology analysis for Trust Ratings

Data Shared:

• Domain names of websites you track
• No personal information is shared

How It Works: We analyze the technology stack of tracked websites to identify legitimate e-commerce platforms, payment processors, and security certificates. This helps us assess website trustworthiness.

Privacy Policy: builtwith.com/privacy

9. Zyte (Web Data Extraction)

Purpose: Web data extraction for price monitoring on websites that block standard access

Data Shared:

• URLs of websites you track
• No personal information is shared

How It Works: When a website blocks our standard price-checking methods, we use Zyte's web data extraction service to retrieve the page content and extract current pricing information.

Privacy Policy: zyte.com/privacy-policy

10. AI Services (OpenAI Vision & Anthropic Claude)

Purpose: AI-powered price extraction and product analysis

Data Shared:

• Screenshot images (when using screenshot feature)
• Webpage content for price extraction

Note: We use the API in a way that your data is not used to train AI models.

Privacy Policy: anthropic.com/privacy

11. Push Notification Services

Purpose: Sending price drop alerts

Services:

• Apple Push Notification Service (APNs): For iOS devices
• Firebase Cloud Messaging (FCM): For Android devices

Data Shared: Device push token and notification content

Data Minimization

We only share the minimum data necessary for each service to function. We regularly review our third-party relationships and remove services that are no longer needed.

Questions?

If you have questions about how we use third-party services, contact us at support@tagdrop.io