Muscat: Google has officially released the NotebookLM apps for Android and iOS, hours before Google I/O 2025. Since its launch in 2023, the AI-based note-taking and research assistant has only been accessible via desktop. Google has now made the service available on the go. According to Oman News Agency, NotebookLM is designed to help people better understand complex information through features like smart summaries and the ability to ask questions about documents and other materials. The app gives access to Audio Overviews, which are NotebookLM's AI-generated podcasts based on the source materials you have provided. There is background playback and offline support for Audio Overviews.