What is Deferred Deep Linking?
Deferred deep linking extends standard deep linking to work even when the target app is not yet installed. The "deferred" part means the deep link destination is preserved (deferred) through the app store installation process, so users are routed to the correct in-app content after they install and open the app for the first time.
For example, a user clicks a link to a specific product in your app. Since they don't have the app installed, they're redirected to the App Store or Play Store. After installing and opening the app, deferred deep linking ensures they land on that exact product page — not the generic onboarding screen.
How it works
Deferred deep linking works by matching a pre-install click to a post-install app open. Here's the typical flow:
1. Click capture — When the user clicks a link, the deep linking platform records device fingerprint data (IP address, device model, OS version, screen size, locale) and the intended destination.
2. Redirect to store — Since the app isn't installed, the user is redirected to the appropriate app store.
3. Install & open — The user installs the app and opens it for the first time.
4. Match & route — The app's SDK contacts the deep linking platform, which matches the device fingerprint to the original click. The preserved link data is returned, and the app routes to the intended content.
Modern platforms like Redirectly use probabilistic fingerprinting combined with deterministic signals to achieve high match accuracy without requiring user-identifiable data.
Why it matters
Deferred deep linking is critical for mobile growth because most marketing touchpoints reach users who don't yet have your app:
- Higher new-user conversion — Users who land on relevant content after install are far more likely to engage than those who see a generic home screen - Install attribution — Know exactly which campaign, ad, or referral drove each install - Seamless referral programs — The referrer's context (invite code, shared content) passes through the install - Better onboarding — Personalize the first-time experience based on what brought the user to your app
Frequently asked questions
How is deferred deep linking different from regular deep linking?
Regular deep linking only works when the app is already installed — it routes users to specific in-app content. Deferred deep linking adds the ability to preserve that destination through the app install process, so new users still land on the right content after installing.
Does deferred deep linking work on both iOS and Android?
Yes. Deferred deep linking works on both platforms, though the underlying matching techniques differ. On iOS, privacy restrictions (App Tracking Transparency, Private Relay) require fingerprinting and probabilistic matching. On Android, Google Play Install Referrer provides a deterministic matching signal.
How accurate is deferred deep linking?
Modern deferred deep linking platforms achieve 90-95%+ match rates by combining multiple signals: device fingerprinting, IP matching, Google Play Install Referrer (Android), and Apple's attribution APIs. Redirectly uses a multi-signal approach to maximize accuracy across both platforms.
Related terms
Deep Linking
A technique that uses URIs to link directly to a specific screen or piece of content within a mobile app, rather than simply launching the app's home screen.
Mobile Attribution
The process of identifying which marketing channel, campaign, or touchpoint led a user to install or engage with a mobile app.
Universal Links
An iOS feature that allows HTTPS URLs to open directly in a native app instead of Safari, verified through an Apple App Site Association (AASA) file.
Android App Links
Android's verified deep linking mechanism that uses Digital Asset Links to associate HTTPS URLs with an app, allowing links to open directly in the app without a disambiguation dialog.