Enjoy Quiet Progress, a new original piano soundtrack for focused play. Background music works offline and has its own switch and volume control. Your preference is saved, and playback stops when you leave the app. New sound effects for digits, notes, hints and completed puzzles, with an independent sound switch. Continue Free Play, Daily Challenges and Levels from separate save slots. Saves are more reliable, with clearer status, retry support and Undo/Redo restored when you return. Explore clearer difficulty descriptions, easier-to-tap number keys and improved iPad layouts. We also fixed timer, hint and statistics issues.