Comparison

Pocket Brain vs Second Brain

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Pocket Brain

Features
Read full description

Boost your productivity with Pocket Brain – the fast, AI-powered second brain in your pocket. Whether it's an idea, a reminder, a to-do list, or a random thought—Pocket Brain lets you speak or type it instantly, then automatically organizes everything for you using smart AI. Need to find something later? Just ask. Pocket Brain understands natural language and brings together related thoughts, even if they were saved weeks apart. Key Features - Capture ideas fast by voice or text No more forgotten thoughts. Just open the app, speak, and it's saved. - AI organizes your knowledge for you Your notes are sorted automatically—no tags or folders needed. - Chat with your second brain Ask questions like “What were my business ideas last month?” or “What books do I want to read?” and get instant answers. - Smart search & retrieval Forget keywords—just describe what you're looking for in your own words. - Save everything in one place Ideas, lists, plans, reflections—anything you want to remember. - Private. Secure. Yours. Your thoughts belong to you. Volty ensures your data is stored securely and privately. Perfect for: - Entrepreneurs & creatives capturing spontaneous ideas - Students organizing notes and study material - Busy professionals keeping track of tasks, meetings, and insights - Anyone building a personal knowledge base Don’t let your best thoughts slip away. Pocket Brain is the fastest way to capture, organize, and access your knowledge.

About

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.

Highlights
  • 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)
Features
Read full description

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/

Screenshots

Pocket Brain4 screens
Second Brain4 screens

Verdict

The call

The clearest difference is in-app purchases: Pocket Brain at none against Second Brain's 2. Pocket Brain also leads on iOS requirement (14.0 vs 17.0). Second Brain's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Second Brain sells 2 in-app purchases, starting at $4.99 per month. Pocket Brain asks for nothing beyond the download.

UpkeepUpdate frequency

Pocket Brain ships an update every 8 days, Second Brain weekly. The most recent releases landed on September 10, 2026 and September 8, 2026 respectively.

Scorecard3 real differences · 7 level
Pocket Brain versus Second Brain: the parameters behind the verdict, then further details
ParameterPocket BrainSecond Brain
PriceFreeFree
Rating—4.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 8 daysWeekly — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPod — betteriPhone
Requires iOS14.0 — better17.0
Further details — not scored
Size44 MB12 MB
Age rating4+4+
DeveloperMIGUEL ALVAREZ LESMESLiwei Xie

In-app purchases

None

Pocket Brain

No in-app purchases

2 purchases

Second Brain

Subscriptions2
  • Second Brain Pro3 Days trial$4.991 Month
  • Second Brain Pro7 Days trial$39.991 Year

Questions

Is Pocket Brain free?
Pocket Brain is free to download, with no in-app purchases.
Is Second Brain free?
Second Brain is free to download, with in-app purchases available.
Do Pocket Brain or Second Brain have ads?
Pocket Brain shows ads; Second Brain does not.
Which is updated more often, Pocket Brain or Second Brain?
Pocket Brain ships an update every 8 days, and Second Brain weekly. Most recently, Pocket Brain was updated on September 10, 2026 and Second Brain on September 8, 2026.

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