CRDs

A focused flashcard app built for two ways of thinking — typed and drawn.
Create text cards with bullet points, code blocks, and images. Or switch to a drawing card and write, sketch, and annotate by hand directly on the canvas.
Cards are scheduled automatically using spaced repetition. Study what you need to review today, and the app handles the rest.
Features
— Typed cards with rich text, images, and OCR
— Hand-drawn cards with pen, eraser, images, and tape
— Tape mechanic: hide and reveal content during review
— Spaced repetition scheduling
— Tags to organise your cards
— Rate each review: Again, Hard, Good, or Easy
No accounts. No sync. Everything stays on your device.