Second Brain vs Orbit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Second Brain
This AI-powered journal captures your thoughts via voice or text, automatically organizing and connecting them. It helps you recall memories, discover patterns, and reflect on your growth.
- 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)
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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/
Orbit
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Write messy. Find the patterns later. Orbit is a calm place to dump every thought — work, life, half-formed ideas — and make sense of them later. Not a diary. Not a wellness app. A mind you can search. Most notes go somewhere to be forgotten. Orbit is built for the opposite: the more you write, the more it gives back. CAPTURE WITHOUT FRICTION Open Orbit and write. No folders to pick, no tags to invent, no blank-page ceremony. Get the thought down — from the app, the Share Sheet, or a Home Screen widget — and move on. ASK YOUR OWN MIND ANYTHING Later, ask Orbit a real question — "what have I been worried about lately?", "what did I decide about the launch?" — and get an answer drawn from everything you've written, alongside the entries it came from. FIND THE PATTERNS YOU'D MISS Orbit quietly surfaces the themes running through your thinking — the ideas you keep circling back to, the worries that recur — so you can see what's hard to notice one entry at a time. A WEEKLY LOOK BACK Each week, Orbit reflects your thinking back to you: what you focused on, what shifted, what's worth returning to. BUILT TO BE CALM One clear thing to do on every screen. A warm, editorial design that feels more like paper than a dashboard. No streaks, no badges, no guilt. PRIVATE BY DEFAULT Only you can see what you write. Orbit is a place for your real, unfiltered thinking. Write messy. Orbit finds the patterns later. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.useorbit.ink/privacy
Screenshots
Verdict
Second Brain and Orbit are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Second Brain sells 2 in-app purchases, starting at $4.99 per month and Orbit sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Second Brain ships an update weekly, Orbit every 9 days. The most recent releases landed on September 8, 2026 and September 22, 2026 respectively.
| Parameter | Second Brain | Orbit |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly — better | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 12 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Liwei Xie | Runtime Labs LLC |
In-app purchases
Second Brain
- Second Brain Pro3 Days trial$4.991 Month
- Second Brain Pro7 Days trial$39.991 Year
Orbit
- Orbit Pro (Monthly)$4.991 Month
- Orbit Pro (Yearly)$49.991 Year





