ChatGPT doesn't have built-in spaced repetition scheduling.
You can use it to generate flashcards or create a manual review schedule like 1-3-7-14-30 day intervals, but it won't track what you've reviewed or automatically remind you when to revisit material.
For actual spaced repetition with automatic scheduling, you need a dedicated tool like Anki or Daily Brain Bits, which connects directly to your Notion and Obsidian notes and handles the spacing algorithm automatically without requiring manual flashcard creation.