Thanks a bunch for taking time out and providing such in depth review. UI was definitely my main focus this is why I ran short on time to polish other stuff, likes of which you have highlighted in your comment.
Thanks for the idea of ⭐s I was thinking about how to increase replayability. There is also a bug with timer that 'Times up!' dialog doesn't show after first three levels & I have devised a new algorithm to jumble up puzzle (earlier it made the puzzle unsolvable so I made those manual shuffles you see in the game which make difficulty a bit weird). Both of these I couldn't make part of jam's build. I will continue working on my game after 20th (because I have my semester exams going on till then :P) will likely include your suggestions for statistics screen.