In the AI chatbot world, ubiquity is everything. Companies have raced to build desktop and mobile apps for their bots, in order to both give them new capabilities but also to make sure they’re right in front of your face as often as possible. There’s no better example of that than Google’s new Gemini app for iPhone, which quietly hit the App Store around the world this week. The free app is simple and straightforward: it’s just a chat window and a list of your previous chats. You can query the b...