Donna vs Second AI Brain

Donna is your AI Personal Assistant

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 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 related system permissions are available. HOSTED AI, NO API KEY REQUIRED A frontier multimodal flagship AI model powers text-based memory, knowledge, context, and planning through a Second AI Brain relay. An eligible three-day trial includes 5 memory/reminder uses, 1 knowledge document, and 5 knowledge Q&A. Monthly and quarterly subscribers receive 80 memory/reminder uses, 20 knowledge documents, and 80 Q&A each month. Quarterly allowances reset monthly, not all at once. A single knowledge document may contain up to 100,000 characters. Apple shows the local price before purchase. BUILT AROUND YOUR DATA Core memory, knowledge, indexes, and retrieval stay on your device or your optional private iCloud. Content needed for requested AI features passes through the relay to the third-party AI provider identified in our Privacy Policy. The relay does not retain prompt or answer content. Existing local data remains accessible after an AI trial or subscription ends. Supports iPhone, iPad, widgets, and the Share extension. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/