Editorial review: strengths, limitations and current access conditions.
RIOT offers a professionally positioned cognitive battery with 15 subtests across six indices. The current full assessment is advertised at $50, with a shorter Basic option and business or research administration tools.
Its breadth and documented research approach are strengths, but the cost and account-based flow reduce its value for a casual visitor seeking a quick, free result. Published norms apply to US-born native English-speaking adults aged 18 or older. That restriction matters more than the ability to access the website from another country. The question count varies by subtest and is not represented as 15 questions.
The rating reflects suitability for this directory, including transparency, accessibility and useful feedback. It is an editorial comparison score, not the percentage accuracy of an IQ result. The service should be considered alongside its stated limitations and current payment terms.
This review uses public product information and provisional editorial scores, updated on 12 October 2026. Unknown criteria receive a conservative estimate and are identified in the assessment table. We did not purchase reports, audit security or independently validate the scoring algorithm for this update.
Sources: Tests, pricing and norming scope.