Freeing up space · One-tap clean-up (Run Tuhi)
What is Smart Care in Storage Studio's Preferences?
Short answer: Smart Care is the name some Preferences switches use for the Run Tuhi one-tap clean-up on the Home screen. They're the same routine.
Smart Care is the name some settings use for the Run Tuhi clean-up — the one-tap routine on the Home screen. They're the same thing: the button says Run Tuhi, and a few switches in Preferences refer to it as Smart Care.
The main setting you'll see is Let Smart Care clean duplicate files under Preferences → Rules → Global overrides, which lets the run offer to remove exact copies after its safe steps (you still approve each time).
For what the routine does, see What does the Run Tuhi button do?