architectural design, floorplan app interface, detailed blueprint, modern layout, user-friendly navigation, interactive elements, drag-and-drop feature, grid view, measurement tools, furniture icons, room labeling, 3D preview, virtual tour, sunlight simulation, material selection, texture options, color palette, save and export functions, cloud storage, real-time collaboration, tutorial guides, professional templates, residential building, apartment complex, smart home integration, energy efficiency calculator, landscape planning, minimalist aesthetic, touchscreen gestures, high-resolution display, ambient lighting, user profile, customer support chat, feedback system, software updates, in-app purchases, subscription model, cross-platform compatibility, data encryption, privacy settings.