# Second Brain - AI Memory Notes — Voice journal, diary & recall > AI-powered journal for organizing, connecting, and recalling memories. (iPhone/iPad app by Liwei Xie.) - Source: https://appshunter.io/ios/app/second-brain-ai-memory-notes/id6760254340 (this page in markdown: same URL + `.md`) - Developer: [Liwei Xie](https://appshunter.io/developer/1106616046) - Category: Productivity, Lifestyle - Price: Free with in-app purchases - Rating: 4.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 12 MB - Languages: American English, Japanese, Chinese (Simplified, China), European Spanish - Released: 2026-03-16 - Data updated: 2026-08-26 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/second-brain-ai-memory-notes/id6760254340/reviews.md ## What is Second Brain? The AI-powered journal that remembers everything. Capture thoughts by voice or text — AI organizes, connects, and recalls your memories so nothing is ever lost. Second Brain models how your mind actually works. Every memory is classified into three layers — instant thoughts, short-term plans, and long-term knowledge — then linked, reflected on, and surfaced exactly when you need it. CAPTURE IN SECONDS Type a thought or press and hold to speak. AI automatically classifies each memory, extracts tags, and generates a summary. No folders. No manual sorting. Just capture and move on. EXPLORE YOUR MEMORIES Ask anything: "What did I decide about the project?" or "What did Sarah say last week?" AI searches across all your memories using meaning — not just keywords — and weaves relevant ones into a clear, contextualized answer. PEOPLE MEMORY Create cards for the people in your life. Track what they said, shared experiences, meeting notes, and to-dos. Never forget a birthday, a promise, or a conversation again. WEEKLY REFLECTIONS Every week, AI reviews your memories, finds recurring themes, spots growth areas, and offers a concrete suggestion — like a thoughtful friend reading your journal. DISCOVER CONNECTIONS AI builds a knowledge graph across your memories, revealing patterns and links you never noticed. Watch your ideas form constellations over time. VOICE CAPTURE Press and hold to speak. Real-time transcription fills your memory instantly. Switch between English and Chinese with one tap. Perfect for capturing thoughts on the go. KEY FEATURES - Three-layer memory system inspired by cognitive science - AI classification, tagging, and summarization - Semantic search — find memories by meaning - Memory strength visualization with Ebbinghaus forgetting curve - People cards with relationship tracking - Daily, weekly, and monthly AI reflections - Voice input with real-time transcription - Theme clusters that reveal your thinking patterns - Memory connection graph - iCloud sync across devices - Full data export (JSON + Markdown) - Works offline — core features need no internet - Privacy-first: your data stays on your device SUBSCRIPTION Second Brain is free to use with daily limits. Upgrade to Pro for: - 20 memory explorations per day - Deep weekly and monthly reflection reports - Memory connection graph - Theme discovery clusters - Unlimited captures, people cards, and OCR - iCloud sync and data export Free 3-day trial available. Cancel anytime. PRIVACY Your memories are stored locally on your device. AI features use the Anthropic Claude API for processing — no other third party ever sees your data. Optional iCloud sync uses your personal Apple account. We never collect, store, or sell your information. Terms of Use: https://smartkiitos.com/secondbrain/terms/ Privacy Policy: https://smartkiitos.com/secondbrain/privacy/ ## Key features - AI classification, tagging, and summarization - Semantic search by meaning - Three-layer memory system - People cards for relationship tracking - Weekly AI reflections - Voice input with transcription - Data export (JSON + Markdown) ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Second Brain Pro | $39.99 | per year | | Second Brain Pro | $4.99 | per month | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/second-brain-ai-memory-notes/id6760254340/reviews.md ### 4/5 — Fantastic *2026-05-19* This is exactly what i needed. i love using this app, BUT the icloud sync across iphone and macbook does not seem to work. As I use it i feel that I’ll think of some improvements since id be using it every day, but this is a game changer for me **Developer response:** Thank you so much for the kind words — it means a lot to hear the app is a game changer for you! You're right about the iCloud sync issue; we've already identified the problem and expect to have it fixed in the next update. If you run into anything else or think of those improvements, please don't hesitate to email us at info@smartkiitos.com. We'd love to hear them! ## Frequently asked questions about Second Brain ### What is Second Brain? Second Brain is an AI-powered journal that helps you capture, organize, and recall your thoughts and memories. It uses AI to classify, connect, and summarize your entries, making them easily searchable by meaning. ### Does Second Brain have ads? Second Brain is ad-free. The core features are available for free with daily limits, and an optional Pro subscription unlocks advanced features without any advertisements. ### How does Second Brain organize memories? Second Brain organizes memories into three layers: instant thoughts, short-term plans, and long-term knowledge. The AI then automatically classifies, tags, and summarizes each memory, creating a knowledge graph of connections. ### Can I use Second Brain offline? Yes, core features of Second Brain work offline. This means you can capture and access your memories even without an internet connection, ensuring your data is always available. ### What are the subscription options for Second Brain? Second Brain offers a Pro subscription with daily limits on explorations and reflections. Pro users get unlimited captures, people cards, OCR, iCloud sync, data export, and access to the memory connection graph and theme discovery clusters. ### How often is Second Brain updated? The latest version of Second Brain is 1.5.1, last updated on July 7, 2026. Updates typically include new features, performance improvements, and bug fixes to enhance user experience. ### Is my data safe with Second Brain? Second Brain prioritizes privacy with data stored locally on your device. AI processing uses the Anthropic Claude API, and your data is not shared with any third parties. Optional iCloud sync uses your personal Apple account. ### What devices does Second Brain support? Second Brain is currently supported on iPhones. iCloud sync allows for seamless data access across your Apple devices if you choose to enable it. ## Version history (last 5 releases) ### 1.6.1 — 2026-08-19 This release is all about stability. • More reliable AI classification, exploration, and reflections — fewer occasional failures • Faster screenshot import processing • Various fixes and polish ### 1.6.0 — 2026-08-11 Two big features: Screenshot Inbox + Meeting Briefings. • Screenshot Inbox: your screenshots can become memories. Tap the photo icon next to the input box to import screenshots — text is read on-device (images never leave your phone), then cleaned up, classified, and tagged automatically. Search and connect them like any other memory • Share images from anywhere: send a picture to Second Brain from Photos or any app, and it's recognized and saved • Meeting Briefings: the day-before reminder is now a full briefing — what you talked about last time, what you wanted to bring up, an upcoming birthday. Tap to jump straight to their page • What you just captured now appears right below the input box — no more scrolling to find it • Memory card layout polish: titles no longer get cut off, cards with images align cleanly ### 1.5.5 — 2026-08-03 A small release, focused on polish. • Rate Second Brain directly from Settings — if the app helps you, a review helps us a lot • Minor fixes and refinements ### 1.5.4 — 2026-07-14 A stronger checklist, smarter briefings. NEW: Checklist • Repeating to-dos — daily or weekly tasks come back automatically after you complete them • Mark important to-dos as priority to keep them on top IMPROVED: Daily notifications • Morning Briefing now mixes recent and older memories instead of batching months-old ones together • About to lose your capture streak? The Evening Prompt warns you before it breaks • Fixed "today/yesterday" phrasing on resurfaced memories IMPROVED: More • The memory graph connects your first memories sooner in a young library • Monthly reflection share cards now include stats (memories, themes, growth areas) ### 1.5.3 — 2026-07-11 Fresher mornings — your daily briefing now rotates through different memories every day. IMPROVED: Daily notifications • Morning Briefing picks new memories each day — no more seeing the same content repeated morning after morning • Evening Prompt always points at the right "tomorrow" — todos and meetups stay accurate even if you haven't opened the app in days FIXED • Memory Connections reminders ("A memory resurfaces...") sometimes never arrived ## More apps by Liwei Xie - [NoDiary: Daily Mood Journal](https://appshunter.io/ios/app/nodiary-daily-mood-journal/id1412453660) - [Ainoya](https://appshunter.io/ios/app/ainoya/id1436905770) - [Ashglow](https://appshunter.io/ios/app/ashglow/id6760643633) - [Fed? Pet Feeding Tracker & Log](https://appshunter.io/ios/app/fed-pet-feeding-tracker-and-log/id6760776848) - [Symptio: Symptom Tracker](https://appshunter.io/ios/app/symptio-symptom-tracker/id6761065369) All apps by Liwei Xie: https://appshunter.io/developer/1106616046 ## Related topics [thoughtspot](https://appshunter.io/ios/topics/thoughtspot) · [second brain note](https://appshunter.io/ios/topics/second-brain-note) · [second-brain ai](https://appshunter.io/ios/topics/second-brain-ai) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*