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Snap AI
Pricing
2026 computer-vision AI that reads exam papers

Grade multiple-choice from photos, automatic grading with AI

Photograph paper exams with your phone or upload image files. AI scans each question, grades automatically with authentic red-ink marks, scores the paper, and exports an Excel/CSV roster instantly.

Start grading freeSee how it works

1.2s

Grading speed / page

99.8%

AI accuracy

100%

Teacher in control

LIVE AI GRADING
·Score: 0.00pts
Grade-10 English multiple-choice exam from Hanoi with student pencil marks
AI grading line 16%

Interactive code demo on a Grade-10 exam (code 014) · Use the controls below to jump question by question.

3-step workflow

From a photo of the exam to a complete score sheet

Simplify every part of multiple-choice grading for teachers — no expensive optical scanners or special answer sheets required.

Capture & upload

Photograph the exam or upload the paper file

Use your phone to quickly photograph a stack of student exams or upload images/PDF. AI automatically reads student names, candidate numbers, class, and exam codes already printed on the paper — no special bubble sheet required.

Step 01 / 03
Scan & auto-grade

AI scans each question and grades automatically

The system matches answers to the exam-code key. AI marks a red-ink V for correct items, crosses incorrect choices, circles the official key, and computes a per-question score.

Step 02 / 03
Review & export

Visual review & export scores to CSV/Excel

Teachers review graded papers visually, just like hand-marked work. Unclear pencil marks can be fixed with one click, then export a roster (name, exam code, score, details) to share with parents.

Step 03 / 03
Standout features

Designed for how teachers actually work

Save up to 90% of grading time each exam period — no more late nights checking every multiple-choice item.

  • Computer-vision AI

    Reads pencil marks and hand circles

    AI accurately detects answers students circled in pencil or pen on real exam paper, including faint marks, off-center circles, and eraser smudges.

  • Teacher red-ink convention

    Automatic grading with AI

    Automatically marks a V for correct answers, crosses wrong choices, and circles the official key. It also scores each question in detail and exports the grade sheet directly.

  • Multiple exam codes

    Matches keys by exam code

    Enter the answer key as text or a photo of the key sheet. The system detects the exam code on each paper and matches the right key for every version in the same class.

  • Custom weights

    Flexible scoring scale

    Supports a 10-point scale or a custom scale. Teachers can give equal points per question or assign different weights to each section of the exam.

  • Teacher in charge

    Review with 100% control

    Teachers can skim the red-marked paper images. Unclear or doubtful circles can be fixed in one click without running AI again.

  • 1-click download

    Export scores to CSV / Excel

    Export a full roster immediately: student name, exam code, score, and correct/incorrect items to submit to the school or message parents.

Pricing

Prices are VND on the backend. MoMo payment happens in the web app — this page does not charge you.

  • Free

    0₫

    Grade with a daily paper quota (default 100 papers / day). Sign in with email or Google.

    Get started

  • Monthly

    50.000₫/ month

    Grade without the free-plan quota. Pay with MoMo in the web app.

    Coming soon

  • Yearly · Best value

    100.000₫/ year

    Same benefits as monthly, paid once for 12 months. Much cheaper than 12 × 50.000₫.

    Coming soon
Try it today

Ready to save hours of grading?

Create a free account to get your first grading credits. No complicated setup — it runs in the browser on teachers’ phones and computers.

Sign up for a free trialReview the steps

First 20 papers free · Fast payment via MoMo & bank transfer

Frequently asked questions

AI grading, manual review, CSV export, and MoMo plans.

You provide the answer key (text or photo) and photos of student work. Gemini reads the chosen answers on the paper, compares them to the key (including multiple exam codes), and labels each item correct, incorrect, or ungraded if data is missing. AI does not solve the exam itself.

Yes. After a batch finishes, you mark ungraded items Correct or Incorrect and save. The system only recalculates the score from the locked weights — it does not call AI again. Changing score weights on the profile does not alter old batches.

Export CSV with columns Name, Exam code, Score, Notes (names of ungraded questions, comma-separated).

Free accounts are limited to a daily grading quota (default 100 papers / day). The monthly plan 50.000₫ and yearly plan 100.000₫ remove that cap. Pay with MoMo in the web app, not on this marketing page.

Snap AI is a web app today: email/password or Google. Exam photos are uploaded to object storage for AI to read. There is no App Store / Google Play link on this page.