Which OCR Should I Use for Handwritten Math Answers?

A developer building a Gaokao math exam site is comparing OCR and handwriting tools for messy solution pages with formulas, corrections, and diagrams.

They are evaluating Mathpix, MyScript iink, Google Cloud Vision, Azure Document Intelligence, and TrOCR for accuracy on handwritten math.

The key product decision is whether to use phone photos or an on-screen writing canvas, and how to detect unreadable work instead of guessing.

Because one OCR mistake can break later steps and distort grading, the system must handle uncertainty safely.