100+ scenarios47 fallacies3–5 min eachNo account required

We don't grade opinions. We train your reasoning under pressure.

When people practice with Sophialogy, they catch bias faster, calibrate confidence better, and argue more clearly, online and in real life. Donations keep it free, independent, and accessible to anyone who needs it.

Monthly Sustainers

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Help us reach 38 more monthly sustainers!

Your impact:

$10 /month = 15 hours online

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Why we need support

It costs about $500/month to keep Sophialogy running.

We refuse advertising, we don't sell data, and we won't gate content behind paywalls. That means we depend on people who value what we built.

Our promise

Every dollar goes to: Keeping the site fast and reliable

Building new scenarios grounded in real arguments

Keeping access free for everyone

We'll send quarterly impact updates that show exactly what you funded

About tax deductions

Sophialogy operates as a nonprofit; our 501(c)(3) application is pending. If approved, donations may be tax-deductible retroactive to our formation date. We'll update you as our status changes.