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Koydo's IRT-powered adaptive test pinpoints your skill level across all exam domains in under 20 minutes. Walk away with 8 domain scores and a ready-to-go study plan.
The same Item Response Theory technology used by the real GRE and SAT. Questions adapt in real time based on your answers.
See your accuracy across every subject domain, from algebra and reading comprehension to organic chemistry and grammar.
Your diagnostic results feed directly into an AI-generated study plan targeting your weakest areas first.
Take the diagnostic every 30 days and watch your domain scores rise as you study.
Free diagnostic included on every plan. Takes under 20 minutes.
Take Free Diagnostic