WrongBook Print — printable practice from photoed mistakes
Turns photographed wrong answers into printable drills that track mastery
- Problem
- Parents store wrong answers by photo or in note apps, and it becomes a digital graveyard: review still happens on paper, there are no variant problems or printable worksheets, and paper results never flow back into tracking. Phone photos also carry shadows and handwriting that print badly.
- Solution
- Upload a photo, automatically erase handwriting and enhance diagrams, generate variant problems by knowledge point and lay them out into a printable PDF. After the student finishes, another photo backfills answers so the system tracks mastery by topic and recommends the next round.
- Users
- Parents of K-12 students, tutors, small tutoring centers
- MVP
- Photo upload with handwriting cleanup; variant problem generation by topic; one-click worksheet export to print-ready PDF; photo-based answer backfill with correctness marking; mastery trend by topic
- Revenue
- Free tier with limited worksheets per month; $5–10/mo for unlimited worksheets and mastery analytics; per-student pricing for tutors
- Why now
- Domestic LLM APIs are cheap and easy to connect, parents’ complaint about ‘stored but never practiced’ is concrete, and the photo–worksheet–backfill loop needs no heavy operations.