Which one wins?
Neither. It's a false duel – and if you've been agonizing over it, here's the two-minute answer.
They solve different problems
Spaced repetition answers: when should I see this again? Timing is its superpower – reviews spread over days beat cramming, which is why the big research review by Dunlosky et al. (2013) rated distributed practice among the two highest-utility techniques of all.
A 3D map answers: how does this connect to everything else? Structure is its superpower – exams rarely test isolated facts; they test pathways, dependencies and exceptions.
Cards without a map: a thousand disconnected facts with no story. Map without cards: beautiful architecture, fragile details. You want both, and you don't want to maintain two systems by hand.
The combined loop
1. Upload your material once – the map appears.
2. Quiz inside the map; honest self-grading colors nodes red to green.
3. Red clusters tell you where; repetition over the following days does the when.
4. Green clusters graduate. You never re-drill what's already solid.
Quick answers
Do I have to make cards myself?
No – that's the usual reason this system dies. Brain generates the quizzes from your own files and keeps them attached to the map, so the loop runs itself.
Does this hold for heavy exams like Step 1 or the bar?
It was built for exactly that scale. Structure first, retrieval second, spacing third – in one place.
Run the combined loop free – apply once, study tonight.