Install Attribution

WarpLink uses two tiers of attribution matching to connect app installs to the links that drove them.

Match Cascade

Deterministic Matching

iOS — IDFV: Used for re-engagement when the app was previously installed. IDFV is exempt from App Tracking Transparency. Confidence: 1.0.

Android — Play Install Referrer: The Play Store passes the click referrer through the install process. Confidence: 1.0. Falls back to fingerprint if unavailable (sideloaded apps, no Play Services).

Probabilistic Matching

Used when deterministic signals are unavailable. The SDK collects device signals (screen size, timezone, language) and the server computes a fingerprint including the request's IP address.

Using Attribution Data

import { WarpLink, type AttributionResult } from '@warplink/react-native';

const attribution = await WarpLink.getAttributionResult();
if (attribution) {
  console.log('Link ID:', attribution.linkId);
  console.log('Match type:', attribution.matchType);
  console.log('Confidence:', attribution.matchConfidence);
  console.log('Is deferred:', attribution.isDeferred);
  console.log('Install ID:', attribution.installId);
}

Recommended Thresholds

const attribution = await WarpLink.getAttributionResult();
if (!attribution) {
  showOnboarding(); // Organic install
  return;
}

if (attribution.matchConfidence >= 0.5) {
  navigateToLink(attribution.linkId);
} else if (attribution.matchConfidence >= 0.3) {
  showSuggestion(attribution.linkId);
} else {
  showOnboarding();
}

Privacy

Not Collected

• IDFA (iOS Advertising Identifier)
• GAID (Google Advertising ID)
• Android ID
• Location data
• Contacts or personal data
• Cross-app identifiers

Collected

ATT Compliance (iOS)

• No IDFA access — no ATT prompt needed
• IDFV is exempt from ATT
• Does not interfere with your app's ATT strategy

All signals are sent over HTTPS and used solely for attribution matching. GDPR compliant — only ephemeral device signals collected.