Second Brain: AI Assistant

About

Capture once. Your assistant handles the rest. Second Brain is a personal AI assistant that turns natural language into real, reviewable changes. Speak or type one thought—even when it contains several intentions. Second Brain understands it, updates the right systems, keeps the context, and shows exactly what happened. FROM THOUGHT TO ACTION • Turn things you need to do into Apple Reminders • Put passive dates, meetings, and plans into Apple Calendar • Create, append to, or update the right Markdown page • Handle compound thoughts as separate, ordered results • Never invent a due date you did not express MEMORY THAT KEEPS EVOLVING • Keep pages as ordinary Markdown in the recommended iCloud Drive SecondBrain folder • Choose any other folder in Files whenever you prefer • Optionally connect an Obsidian vault now or later • Join project pages with related actions, events, and recent work • Ask questions about your pages and inspect the supporting sources • Search from the app, Siri, or on-device Spotlight CAPTURE FROM WHERE YOU ARE • Speak or type in the app; edit the text before saving • Share text, links, images, and files from other apps • Use Siri, Shortcuts, widgets, Control Center, or the Action Button • Save directly into a project when the context is already known SEE AND CONTROL EVERY CHANGE Every capture keeps the original words and a receipt for each effect. Open a receipt to see the destination, confirm a pending event, retry a failed effect, or undo a completed change. Second Brain acts in Apple Reminders, Calendar, and your Markdown files instead of hiding results in a private tracker. INTELLIGENCE ON YOUR TERMS Bring one supported API key. Second Brain recognizes it and lets you choose a matching Anthropic Claude or OpenAI GPT model without a separate provider setup. Keys stay in Apple Keychain on this device. Outbound requests are recorded in the in-app privacy ledger. PRIVATE BY DESIGN There is no Second Brain account, developer backend, advertising, analytics, or tracking. Your information stays in local app storage, Apple Reminders and Calendar, your chosen Markdown folder, and the model service you explicitly configure. On-device dictation remains available when selected. If you explicitly choose OpenAI transcription, the selected audio is sent directly to OpenAI under your account. Siri and Spotlight metadata is indexed by Apple on device; private logs, inbox items, and version snapshots are excluded. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://ie.pustotin.com/#legal