Why Teachers Choose OMR Grader
Grading multiple choice exams by hand is tedious and error-prone. Traditional OMR scanning hardware costs thousands and requires specialized forms. OMR Grader eliminates both problems by turning your existing smartphone into a high-accuracy bubble sheet scanner.
Whether you're a classroom teacher grading weekly quizzes, a tutor running practice tests, or a school administrator processing entrance exams, OMR Grader gives you professional-grade results without the professional-grade price tag.
Key Features
Camera-Based OMR Scanning
Use your phone's camera to scan standard bubble answer sheets. Advanced image recognition accurately detects filled marks even on slightly skewed or low-quality prints — no special paper, no special scanner required.
Flexible Exam Configuration
Support for varying numbers of questions and answer choices. Configure your answer key once and grade an entire class in minutes. Supports standard A–D and A–E multiple choice formats.
Instant Score Reports
Get immediate results after each scan: total score, percentage, and a question-by-question breakdown showing correct answers, student answers, and missed questions. Identify which topics your students struggle with at a glance.
Export & Share Results
Save and export grading results for your records. Share individual student reports or batch class results with administrators, parents, or students themselves.
Works Offline
All grading happens on-device. No internet connection required to scan and score sheets — perfect for classrooms and exam halls with limited connectivity.
What Is OMR and How Does It Work?
OMR stands for Optical Mark Recognition — a technology that detects pencil or pen marks on specially formatted paper forms. It's the same technology behind standardized test scoring machines (like Scantron systems) used by educational institutions worldwide.
Traditional OMR systems require expensive dedicated scanners and proprietary answer sheet forms. OMR Grader brings this same technology to your pocket. Using computer vision algorithms running directly on your phone, the app processes images of standard bubble sheets and identifies which bubbles have been filled in — with high accuracy, in real time.
This means any teacher can print standard bubble answer sheets on a regular printer, have students fill them in with any pen or pencil, and grade the entire stack in a fraction of the time it would take to hand-check. It's the most accessible and affordable way to bring OMR grading to any classroom.