LevlPrep is a free, ad-free study site with two independent courses, both usable in a browser with no account required.
NREMT-EMT Prep — a study companion for the National Registry EMT cognitive exam: a 2,084-question bank across four difficulty levels with multiple-choice, select-all-that-apply and drag-to-order items; timed 100-question practice exams; drills by content domain; psychomotor skill sheets for the eight stations; chapter-by-chapter study notes; a mnemonics reference; an EMT terminology glossary; protocol flow diagrams; an interactive patient body map; an auscultation sound trainer; and a branching clinical scenario simulator. A dashboard tracks mastery by domain and maintains a queue of missed questions.
Organic Chemistry I — a full 14-module curriculum of 58 interactive lessons and 10 mechanism walkthroughs, covering foundations, electron movement, acids and bases, conformational analysis, stereochemistry, substitution and elimination, alkenes and alkynes, alcohols and ethers, carbonyl chemistry, carboxylic acids and derivatives, enolates, amines, aromatics, and spectroscopy. Each lesson runs Explain → Visualize → Interact → Guided Practice → Independent Practice → Challenge, with students pushing curved arrows themselves rather than watching worked examples. Seven interactive tools accompany the course: an arrow pusher that computes the product of a drawn mechanism, a resonance explorer, a 3D molecule viewer, a conformation lab, a reaction predictor, an acid/base comparator and a spectroscopy lab. A mastery dashboard scores performance per module from actual question attempts and flags likely prerequisite gaps.
Everything runs client-side and works offline once loaded. Progress is stored locally by default; an optional free account syncs it across devices. No advertising, no paywall, and no personal data required to use any part of the site.
