Master organic chemistry anywhere. Octet is the offline-first study companion built for undergraduates, pre-med, and pre-dental students preparing for MCAT, DAT, and college exams.

No subscriptions to start. No ads. No account. No internet required. Everything lives on your device.

WHAT'S INSIDE

80+ Organic Chemistry Reactions
SN1, SN2, E1, E2, EAS, SEAr, Grignard, Aldol, Wittig, Diels-Alder, Claisen, and more. Every reaction with tappable step-by-step mechanism viewer showing electron flow, bond breaking, and bond forming.

25 Functional Groups
Alkanes, alkenes, alkynes, alcohols, ethers, amines, aldehydes, ketones, carboxylic acids, esters, amides, nitriles, and more. Each with SMILES structure, IR frequencies, NMR chemical shifts, and pKa data.

60+ Reagents
Searchable reagent lookup. Oxidizers, reducers, catalysts, protecting groups, nucleophiles, electrophiles. Full usage notes and typical conditions.

Quick-Reference Tables
pKa values. IR spectroscopy frequencies. ¹H-NMR and ¹³C-NMR chemical shifts. Designed for instant lookup during problem sets.

STUDY TOOLS

Flashcard Mode
Swipe through reactions and functional groups. Mark as "knows" or "learning." Progress persists locally. Built for spaced repetition workflows.

Comparison Mode
Side-by-side reaction comparison. See how SN1 differs from SN2, E1 from E2, at a glance.

Fuzzy Search
Search reactions, reagents, and functional groups by name, type, or transformation. Typo-tolerant.

Bookmarks
Save favorite reactions and reference cards for instant recall.

Dark Mode
Easy on the eyes during late-night study sessions.

WHY OCTET?

✓ 100% Offline - Study on planes, in libraries, anywhere
✓ Privacy-First - No accounts, no tracking, no data collection
No Ads - Ever
Affordable - Free tier + optional one-time lifetime unlock
Beautiful UI - Clean, modern, dark mode, smooth animations
Publication-Quality Molecules - SMILES-rendered structures

PERFECT FOR

• Undergraduate Orgo I and Orgo II students
• MCAT and DAT test prep
• Pre-medical and pre-dental students
• Graduate students needing quick reference
• Biochemistry and pharmacy students
• Self-learners studying synthesis

TOPICS COVERED

Substitution reactions, elimination reactions, addition reactions, electrophilic aromatic substitution, nucleophilic aromatic substitution, oxidation, reduction, Grignard reactions, organometallic chemistry, carbonyl chemistry, enolate chemistry, pericyclic reactions, radical reactions, stereochemistry, chirality, R/S nomenclature, IUPAC naming, functional group interconversion, retrosynthesis basics, spectroscopy (IR, NMR, mass spec), acid-base chemistry, pKa analysis.

Privacy: All data stays on your device. We don't collect anything.