Yes, completely free with no signup and no usage limits.

Are the results real availability checks?

No. This tool simulates availability checks client-side based on username formatting rules (length, allowed characters). For real availability, visit each platform directly.

Does it work on mobile?

Yes. The tool is mobile-first and works on iPhone Safari and Android Chrome.

Social Username Availability — Check Across Platforms

Social Username Availability

Enter a username and click Check to see whether it is valid according to each platform's naming rules. Results are simulated client-side — visit each platform to confirm real availability.

100% client-side · no API calls

How to use

Enter the username you want to claim in the input box above.
Click Check to validate it against each platform's rules.
Green means the username format is valid for that platform. Visit the platform to check real-time availability.

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よくある質問

Is this tool free?: Yes, completely free with no signup and no usage limits.
Are the results real availability checks?: No. This tool simulates availability checks client-side based on username formatting rules (length, allowed characters). For real availability, visit each platform directly.
Does it work on mobile?: Yes. The tool is mobile-first and works on iPhone Safari and Android Chrome.