Answer

StateFlow

• Purpose: State holder.
• Behavior: Always holds a value. Replays the last value to new collectors.
• Equality: Distinct until changed (filters out repeated values).
• Analogy: A variable that notifies you when it changes.

SharedFlow

• Purpose: Event broadcaster.
• Behavior: No initial value required. Can be configured to replay 0 or more values.
• Equality: Emits everything, even duplicates.
• Analogy: A radio station. If you tune in late, you miss the song (unless replay is on).

Rule of Thumb: Use `StateFlow` for UI State (Screen data). Use `SharedFlow` for One-off Events (Navigation, Toasts).