Has potential, but also room for improvement.
Minimalistic feel is nice, but UX shouldn't suffer. For example: no instructions in the beginning, and still no evident tutorial. then a few levels later, you do add instructions. I say either add instructions from the start, or have a design (level AND graphic) that makes evident what you have to do. It is also not clear how to navigate between levels, especially on a PC but also on mobile. Add something (like left and right arrows, or a hint to the sides to let the user know that he has to swipe to go to previous levels. Also maybe add the ability to go to the level selection window from the ESC MENU, and a button to go to it from each level (how do you do it on mobile?? on PC is with ESC
And there is a big bug: pressing the button to reload a level at the end of each level doesn't in fact reset the arrows position. So If you want to redo a level you have to: press ESC, confirm that you want to go to MAIN, then press play, swipe to the level you want to repeat and select it.... way to many steps.
Music is OK, but very repetitive, and on the long run less relaxing because of this.
All that being said, good game.