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Tools for thinking straight.

Untilt builds small, free tools that catch the errors your reasoning hides from you — in the decisions you make, and in the arguments you read.

No account. No cookies. No personal data.

The tools

  • Doxa

    Walk a decision through the cognitive biases most likely to be skewing it — on your own, or with an AI-guided pass. Backed by a searchable bias library.

    Open Doxa
  • Elenchus

    Paste any text and see how its reasoning holds up: logical flaws, a reasoning score, and what it does well. It does not check facts.

Go deeper — Doxa