← Free tools

Free Developer Tools

Useful tools for mobile app developers. No login required.

Deep Link Tester

Test Flinku links: status, headers, timing, and Open Graph — with a Deepview-style preview.

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AASA Validator

Fetch and validate apple-app-site-association for Universal Links.

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Android Assets Validator

Fetch and validate assetlinks.json for Android App Links.

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UTM Builder

Build campaign URLs with live preview, presets, and one-click copy.

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Social Preview

See how Open Graph tags may look on WhatsApp, X, LinkedIn, and Facebook.

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