Why this works
If re-reading prep books hasn't worked for you, that's not a you problem — re-reading is one of the weakest study methods ever measured. Every feature in this app exists because the learning research says it moves scores.
Here are the 6 research-backed methods built into every part of this app.
Principle 1
Practice testing beats re-reading
The core of this app is answering questions, not reviewing notes. Every practice question forces you to retrieve the skill from memory — and retrieval is the rep that builds retention.
The evidence
In a landmark review of ten study techniques, practice testing was one of only two rated 'high utility' across ages and subjects (Dunlosky et al., 2013, Psychological Science in the Public Interest). Students who tested themselves retained roughly 50% more a week later than students who re-studied the same material (Roediger & Karpicke, 2006, Psychological Science).
Where you'll feel it: Practice sets, mixed practice, and full-length tests
Principle 2
Immediate why-right / why-wrong feedback
After every practice answer, you see not just the correct choice but why each tempting wrong answer fails. Errors corrected at the moment of confusion don't get rehearsed into habits.
The evidence
Feedback is among the largest influences on achievement ever measured (Hattie & Timperley, 2007, Review of Educational Research), and feedback after retrieval makes the testing effect substantially stronger (Butler & Roediger, 2008, Memory & Cognition).
Where you'll feel it: Every practice question's explanation
Principle 3
Spaced repetition, not cramming
Flashcards you know come back in days; cards you miss come back tomorrow. The app schedules the reviews so you don't have to — a few minutes daily beats an hour weekly.
The evidence
Distributed practice is the other 'high utility' technique in Dunlosky's review. Across 254 studies, spaced study reliably beat massed study (cramming) for long-term retention (Cepeda et al., 2006, Psychological Bulletin).
Where you'll feel it: Flashcard decks with the Leitner scheduling system
Principle 4
Diagnose first, then target weakness
You start with a diagnostic, not chapter one. Your study plan orders every subskill by where you actually lose points, weighted by how much each category counts on the real exam.
The evidence
Formative assessment — finding out what a learner doesn't know and adjusting instruction to it — shows some of the most consistent achievement gains in education research (Black & Wiliam, 1998, Assessment in Education).
Where you'll feel it: The diagnostic, your dashboard, and the retest-weak-areas drills
Principle 5
Mastery gates, not a calendar
Practice tests unlock when your readiness earns them — across all three categories, not just one. A full-length test taken too early wastes the attempt and the confidence.
The evidence
Mastery learning — advancing on demonstrated competence rather than elapsed time — produced effect sizes around half a standard deviation across hundreds of studies (Kulik, Kulik & Bangert-Drowns, 1990, Review of Educational Research; Bloom, 1984, Educational Researcher).
Where you'll feel it: The unlock thresholds on practice tests 1–3
Principle 6
Mixed practice (interleaving)
Mixed sets shuffle subskills together instead of drilling one type in a block — so you also practice recognizing which kind of question you're facing, which is half the battle on test day.
The evidence
Interleaved practice produced markedly better test performance than blocked practice, even though it feels harder while studying (Rohrer & Taylor, 2007, Instructional Science).
Where you'll feel it: Mixed practice and the shuffled full-length tests
The method is the product. See where you stand in 10 minutes — free.
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