The Meta AI app is an alternative digital assistant for Android users, requiring version 230.0.0.36.164 or later to function. To set it as the default assistant, users must navigate to Settings > Apps > Default apps > Digital assistant and select Meta AI from the list. The app does not provide a dedicated interface for voice or text queries but allows for voice input via the keyboard. Users can generate photos, videos, and Reels for Instagram and Facebook through its integration with Meta's ecosystem. Accessing Meta AI can be done by long-pressing the power button or using gesture navigation. For tasks like setting timers or alarms, users must open the Clock app directly. Gemini is noted as a strong competitor, capable of handling such tasks and providing a versatile digital assistant experience.