Privacy-First Deferred Linking
Track referrals and attribute users without third-party analytics. Full control over your data, zero external dependencies.
Why Relay?
Privacy-Focused
No third-party tracking services. Your data stays on your infrastructure, giving you complete control and compliance.
Flexible Storage
Bring your own database. Works with JSON files, PostgreSQL, MongoDB, or any storage solution you prefer.
Simple Integration
Two-phase capture and process flow. Drop in the SDK, add two API calls, and you're done.
How It Works
Generate Anonymous Fingerprint
When a user visits your referral link, capture their device fingerprint. No personal data collected.
const client = new RelayExpoClient({
serverUrl: 'https://api.example.com'
});
await client.capture({
referralCode: 'FRIEND123'
});Match and Attribute
After signup, match the fingerprint to attribute the referral. Reward referrers automatically.
const result = await client.process({
userId: 'user_12345'
});
if (result.referralCode) {
// Reward the referrer!
await rewardUser(result.referralCode);
}Built For
Referral Programs
Track who referred whom without complex analytics. Reward users based on accurate attribution.
Marketing Attribution
Measure campaign effectiveness across app installs and sign-ups with privacy-first tracking.
Deep Linking
Bridge web-to-app experiences. Preserve context when users transition from browser to native app.
Growth Analytics
Understand user acquisition funnels without compromising privacy or relying on third parties.
Ready to Get Started?
Install Relay in minutes and start tracking referrals with complete privacy control.
View Installation Guide