Bau is an AI-powered interior design app. Users simply upload a photo of their room and choose a new style, and the AI will automatically redesign the user's room and provide a series of home decor products for purchase. Bau supports over 30 styles, including industrial, mid-century modern, minimalist, bohemian, Miami, urban, Mediterranean, Japanese, Moroccan, and southwest styles. Users can try it for free a few times, but longer-term use requires a subscription purchase. Bau uses Stripe for payment, ensuring payment security.