LinkLint

Find App Link Setup Issues

Free · In-App Purchases · Designed for iPad. Not verified for macOS.

App links not opening as expected? Enter a domain or issuer to inspect AASA, Asset Links, OIDC, and OAuth configuration, then see exactly what needs attention. When a web link does not open an app as expected, the problem may be in the website association file, app identity, URL rules, or network response. LinkLint brings those checks into one clear report. Enter a domain or issuer to see what passed, what needs attention, and the evidence behind every result. Built for release checks and troubleshooting • Check whether AASA is reachable and whether its app declarations and Universal Links rules are valid • Review app identifiers, certificate fingerprints, and website-declared URL matching rules in assetlinks.json • Test URL paths, queries, fragments, and exclusions with a step-by-step matching trace • Inspect issuers, endpoints, capabilities, and security settings in OIDC Discovery and OAuth authorization server metadata Turn each result into a useful next step Every issue explains what happened, why it matters, likely causes, and what to change. PASS, WARNING, FAIL, NOT CONFIGURED, and UNKNOWN make it easy to separate a valid setup from an optimization, an error, a missing configuration, or insufficient evidence. Reports preserve HTTP status, headers, manual redirects, DNS resolution, the actual connection address, TLS details, certificate summaries, the complete response body, and SHA-256. When you need to go deeper, the original evidence is already there. Local files and scan history Import AASA, assetlinks.json, OIDC, or OAuth metadata from Files and validate it on your device. The free version keeps the five most recent scans for quick review. Free inspections, optional Pro upgrade The free version includes all four protocol inspections, diagnostics, network evidence, local file validation, and URL rule testing. One LinkLint Pro purchase adds regional App Store availability checks, platform association insights, semantic comparisons between scans of the same target, and unlimited local history. Local by design No account is required. Scan reports and history stay on your device and are not automatically uploaded or synced. App Store information helps identify declared apps but never changes the protocol result. Important: A passing website-side check does not guarantee that a link will open an app on a real device. Final behavior also depends on app entitlements or manifests, signing, installation state, system caches, user settings, and in-app routing.

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The developer, Shanghai Fengcong Technology Co., Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

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    Accessibility

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    Information

    Provider
    Shanghai Fengcong Technology Co., Ltd.
    Size
    5.6 MB
    Category
    Developer Tools
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and Simplified Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © Shanghai Fengcong Technology Co., Ltd.
  • Developer Website
  • Privacy Policy

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