iOS Universal Links guide — AASA setup made simple
Apple App Site Association (AASA) files power iOS Universal Links — HTTPS URLs that open your app instead of Safari. HighGrow iOS Universal Links guide walks through AASA hosting, team ID and bundle ID configuration, and validation so deep links work reliably on iPhone and iPad.
Step-by-step Universal Links setup with AASA validator, domain verification, and deferred deep linking integration.
apple app site association helper
HighGrow Dashboard
Universal Links setup without guesswork
AASA file validator
Check that your apple-app-site-association file is reachable, valid JSON, and includes your app ID.
Domain verification checklist
Guided steps for hosting AASA at /.well-known/ and verifying associated domains in Xcode.
Deferred deep linking paired
Universal Links work with deferred deep linking when users install from a smart link.
AASA helper and validation tools
AASA reachability check
Test both /.well-known/ and root AASA paths.
Team ID + bundle ID match
Verify your app ID appears in the AASA details array.
Link debugger
Test Universal Links on device and simulator.
Android App Links parity
Validate assetlinks.json alongside AASA in one hub.
Smart link builder
Create Universal Link URLs with campaign parameters.
Migration from FDL
Replace Firebase Dynamic Links with supported Universal Links.
iOS Universal Links FAQ
- What is an Apple App Site Association file?
- AASA is a JSON file at your domain that tells iOS which app should handle specific URL paths — required for Universal Links.
- Where should I host the AASA file?
- Host at https://yourdomain.com/.well-known/apple-app-site-association (no file extension) with application/json content type.
- Can HighGrow validate my Universal Links setup?
- Yes. Use the free Android App Links checker and Developer Hub domain validator to test AASA and assetlinks reachability.
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