Spaced repetition

A spaced repetition app for ideas you actually want to keep.

Nukio helps you learn concepts and vocabulary, then schedules practice so the important ideas come back at the right time.

Nukio review screen for spaced repetition practice

Remember concepts, not just cards

Nukio turns ideas into short lessons, examples, and recall prompts so practice feels connected to understanding.

Review at the useful moment

Your practice queue brings knowledge back before it fades, helping vocabulary and concepts become easier to retrieve.

Keep new material in the loop

Imports, AI collections, and saved concepts can all become reviewable learning paths instead of one-off notes.