Untie the knots - Art of ropes comes from kun feng.  The object is to swap tiles in order to create loops among the colors.
This game is very similar to Hexa Knot which I reviewed in 2018.

According to the Leaderboard, only 61 people are playing this game.  I'm number 8 with 35 knots solved.  Only 1 person has solved all 111 knots.
This game is well done.
https://apps.apple.com/us/app/untie-the-knots-art-of-ropes/id1488211501

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