Moodset is a mood tracking app that helps users gain emotional awareness through a scientifically grounded two-dimensional model of valence and arousal. It combines manual mood entry with automatic analysis of music listening patterns to reveal emotional trends. Users can write mood notes, visualize their emotional journey on a timeline, and generate mood-regulating playlists based on desired affective states and preferred genres. The app syncs data across devices and prioritizes privacy. It is suitable for personal clarity, self-reflection, or as a tool alongside therapy.