Why it worked
The video uses a relatable and humorous premise (life without a significant other) combined with a visual representation of emotions to create engaging content. The subtle, yet clear, demonstration of the app's functionality as a mood tracker makes it inherently promotional without being overt.
Summary
The video shows the "Widgetable" app interface, where colorful orbs representing emotions fill a jar. The text "Life without my bf:" appears, and the orbs change from mostly green and orange (good/great) to purple and blue (awful/bad) as the video progresses, implying the user's mood is negatively affected by their boyfriend's absence.