Grayed-out icons with a "Hint" or progress bar (e.g., "75/100") to create a "completionist" urge.
A backend service that watches for specific "events" (clicks, completions, time-on-app). Achievements
A real-time celebratory pop-up (haptic feedback + visual "burst") informs the user of the unlock. Grayed-out icons with a "Hint" or progress bar (e
Low-hanging fruit to build momentum. Example: "Profile Pro" (Upload a profile picture). categorize the goals:
A "Recent Unlocks" feed showing what friends have achieved.
To keep users engaged at different stages, categorize the goals: