Pyraminx Duo comes from Shenzhen Magic.. It's a virtual representation of the mechanical puzzle that is also known as Rob's Puzzle.  Rob Stegmann came up with the idea of this puzzle and Oskar van Deventer then made it happen.
Of all the twisty puzzles, this could be the easiest.

You don't have to buy the Real McCoy, because this version is quite good.
https://apps.apple.com/us/app/pyraminx-duo/id1445874445

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