AI mistake notebook for iPhone and iPad

Save the questions you missed.

Snap a photo of a homework or test question. Compare your original work with a step-by-step solution, then pick questions to practice again.

Watch the 18-second demo · From photo to solution

From photo to practice

How Cardify works

Capture one question
Take a photo or choose one from your library. Include the full question, any diagrams, and your written work.
Compare your work with the solution
Review the work Cardify could read alongside the solution. Open the original photo whenever you need to double-check a detail.
Make a practice set
Find missed questions by subject or topic. Export the ones you want to redo as an A4 PDF, with or without the solution steps.

Study guide

Use one algebra example to find your first wrong step and practice the question again.

Can I import a photo of my homework or test?

Yes. Choose a photo from your library and crop it to one complete question.

Can I review my original work?

Cardify keeps the original photo and shows the work it can read. Open the photo from the question details to check unclear handwriting.

Can I print questions to practice on paper?

Yes. Select questions, preview your A4 PDF, and print it or save it to Files.