NodeStudy

Know what you know before the exam tells you.

NodeStudy is an AI study tutor. It works from your own PDFs, slides, problem sets and past papers, cites the passage behind every claim, asks for your attempt instead of handing over the answer, finds the first invalid step in it, and brings the concept back through spaced review before exam day.

It is built for exams where showing the computation and finding the wrong step decide the grade: science olympiads (IMO, IPhO, IChO, IBO, IOI, IOL, IOAA, OBMEP, OBI), ITA and IME, ENEM and vestibular, concursos and the OAB bar exam, the SAT, medical residency exams and university finals.

The tutor itself needs JavaScript to run. These pages do not:

The method — active recall, first-error diagnosis, spaced review (em português)
Exams and olympiads — which verifiers serve which exam (em português)

NodeStudy is not a Node.js course: the “node” is the unit of study, and the server is written in Python.