OChemNinja
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Draw Your Answer. Get Graded Instantly.
Learn chemistry by doing chemistry.

Honeycomb Vision™ interprets your hand-drawn structures and gives immediate feedback, just like an instructor looking over your shoulder.

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What Makes OChemNinja Different?
Real Structure Drawing Demo
Draw Like It's the Exam
Draw molecules with a pen, finger, touchpad, or mouse. No templates, no more fighting with fragile drawing tools.
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Honeycomb Understands Your Structures
The hexagon recognizes structures, stereochemistry, charges, chairs, Newman and functional groups - just like you draw them on the exam!
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Get Immediate Feedback
No waiting for homework, answer keys, or office hours.
Generate a problem. Answer it. Get feedback immediately!
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Never Run Out of Problems
Problems are generated on demand.
Never run out of textbook questions again.
Featured Practice Tools

Practice organic chemistry the way it appears on exams.

Draw structures, predict products, solve synthesis problems, and receive instant feedback.

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Assign R/S

Practice assigning absolute configuration at stereocenters using the Cahn-Ingold-Prelog (CIP) priority rules. Generate unlimited stereochemistry problems with instant feedback.

Practice
The Honeycomb

Draw structures the way you would on paper. OChemNinja recognizes atoms, bonds, stereochemistry, and charges directly from your sketch.

Launch Tool
Multistep Synthesis

Build synthesis skills one transformation at a time. Draw intermediates, check your work, and develop strategy for complex routes.

Practice
Predict the Product

Practice reaction prediction by drawing the product instead of selecting multiple choice answers. Every problem is generated fresh.

Practice
Free Daily Practice

The free tier provides the ability to practice every tool, everyday, before committing.

Practice
About Me
Built by a Professor
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     Adam Azman, Ph.D.

OChemNinja
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Dr. Adam M. Azman Associate Professor of Instruction, Xavier University
OChemNinja was created by Adam M. Azman, Ph.D., a college organic chemistry instructor, to provide the kind of unlimited practice most students wish they had before an exam.
About Me
Pricing & Plan

Daily Practice

Free

Free

  • The Honeycomb
  • Match the Structure
  • Random Structure Generator
  • Daily Question Allowances
  • Try Every Skill
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Best For: Getting Ninja Fever!

Exam Week Pass

Free

$7.99 for 7 Days

  • Unlimited Practice
  • Unlimited Reaction Prediction
  • Unlimited Assign R/S
  • Unlimited Synthesis
  • New Skills Added Automatically
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Best For: Exam Prep

Semester Pass

Free

$49.99 Per Term

  • About the Cost of 1 Tutoring Session
  • Entire Semester Access
  • Lowest Effective Cost
  • No Monthly Renewals
  • Full Course Coverage
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Best For: Active OChemNinjas!