The Switch version heavily relies on the Joy-Con's and the console's touchscreen. Updates have specifically targeted two areas:
The most recent update focused on hardware transition and cross-generational compatibility. Next-Gen Optimization: dr kawashimas brain training switch nsp update
It has been over half a decade since Dr. Kawashima’s Brain Training for Nintendo Switch (known in Japan as Nintendo Switch Training and in the US/EU as Brain Age: Nintendo Switch Training ) first hit the shelves. While the mainstream news cycle has moved on, a dedicated community of players, archivists, and homebrew enthusiasts continues to ask a very specific question: The Switch version heavily relies on the Joy-Con's