Google has rebranded its Bard AI chatbot as Gemini as the tech giant announced a new mobile app and a more powerful AI tool, Gemini Advanced. A Gemini app has launched on Android for the first time, and the chatbot will be made available inside the official Google app on Apple’s iOS. In a major update to the firm’s AI offerings, the mobile app upgrades will launch alongside a new subscription-based service called Gemini Advanced, which uses Google’s more powerful Ultra 1.0 AI model and is capable of taking on more complex tasks, including coding and “logical reasoning”, Google says. It is bein…