Artificial Intelligence has become one of the most influential technologies in modern software development. From chatbots and recommendation systems to sentiment analysis and intelligent search, machine learning models are now expected features in many mobile applications.For several years, integrating AI into iOS applications almost always meant sending user data to cloud services. APIs such as OpenAI, Anthropic Claude, and Google Gemini allowed developers to leverage state-of-the-art language models without worrying about infrastructure or hardware limitations. While this approach is simple, it also introduces several challenges, including network latency, API costs, internet dependency, and privacy concerns.