cool*

Small worlds to play, personalize and share.

cool* on thatscool.app accepts existing apps through its public submission workflow. The .app address does not identify a hosting provider; no Vercel deployment or hosting account is needed to submit.

Submit your apps to cool* →
Tell your agent: “Go to https://thatscool.app and follow its instructions to submit our apps.” Agent guide · Submission manifest

A shared experience link opens directly. Upload and preview apps before sign-in; sign in with Google later only if you choose to claim them.

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