Grade bubble answer sheets with your phone camera. Print the sheets, enter your key, and point your camera. It reads every bubble and grades it in a second.
Bubble Raid is a free scantron-style grader. Print free bubble answer sheets, tap in your answer key, and hold your phone over each sheet. It reads every bubble and the student number and grades it on the spot.
Yes. Printable sheets and phone grading are free. Pro adds up to 100 questions, saved quizzes, roster names, item analysis and a spreadsheet export.
No. Your phone camera reads the bubbles.
Bubble Raid still reads it, even tilted or upside down.
Double bubbles are flagged so you can fix them in one tap.
Yes. Students bubble their number and Bubble Raid matches each sheet to it.