Second AI Brain

Second AI Brain helps you capture what matters, organize it into lasting memory and connected knowledge, and turn it into useful action. CAPTURE IN THE MOMENT Save ideas and experiences with text, voice, images, files, or links. English and Simplified Chinese speech recognition and transcription follow the language you select in Settings. MEMORY THAT STAYS USEFUL Keep short-term and long-term memories organized, searchable, and connected. Related knowledge can resurface when it becomes relevant. FROM MEMORY TO ACTION Create reminders, keep calendar context in sync, review upcoming items, and receive weather-aware alerts when the related system permissions are available. YOUR CHOICE OF AI Configure two separate LLM services in Settings. The Memory & Knowledge LLM organizes memory, structures knowledge, maintains long-term context, and supports personalization. The Context & Planning LLM evaluates situational relevance and prepares project context and plans. The app ships with every LLM field blank and stores saved keys in the iPhone Keychain. BUILT AROUND YOUR DATA Core memory, knowledge, indexes, and retrieval stay on your device. Optional iCloud sync, Apple system capabilities, imported web content, and user-configured LLM services are used only when you choose the related feature and grant the required permission. Second AI Brain supports iPhone, iPad, widgets, the Share extension.