Comparison

SecondBrain vs Socratus

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

Head to head
About

SecondBrain

This app automatically transcribes, titles, and files your spoken thoughts, creating a self-organizing note system. It can convert voice notes into calendar events, provide daily summaries, and allow you to chat with your saved information.

Highlights
  • Automatic transcription and titling
  • AI-powered self-organizing notes
  • Voice to calendar event creation
  • Daily morning briefing summaries
  • Chat with your notes for answers
  • 3D brain graph visualization
  • Full-text search
  • Cross-app sharing
Features
Read full description

Most of what you hear, think and plan today is gone by tomorrow. Speak your mind. SecondBrain writes it down, gives it a title, and files it for you. No folders to manage. No typing. Just talk, and your thoughts organize themselves. The AI note app for people who think out loud. WHY SECONDBRAIN • Capture in seconds: speak, type, or share a thought and it is saved instantly • Zero organizing: AI transcribes, titles, and files every note into a self-building folder tree • Voice to schedule: say "dentist Tuesday 4pm" and it creates real events in Calendar and Reminders • Morning briefing: wake up to a daily summary of your day and what matters • Ask your brain: chat with your notes and get answers from everything you have saved • Brain graph: explore your ideas as a living 3D map of connected notes • Search everything: full-text search finds any note in an instant • Share from anywhere: send text, links, images, or audio from any app into SecondBrain • 20+ languages: speak in your language and get replies in your language BUILT FOR BUSY MINDS Founder juggling clients, student capturing lectures, or just someone with too many thoughts to hold? SecondBrain is the frictionless place to put them all. Brain-dump on the go and let the AI do the filing. WORKS WHERE YOU DO Your notes sync to the web at app.secondbrain.icu. Pro users can connect SecondBrain as memory for AI assistants through the MCP connector. SECONDBRAIN PRO Go unlimited: unlimited notes, unlimited AI capture and answers, plus the AI assistant connector. Start with a free trial, then subscribe yearly or monthly. Cancel anytime. Payment is charged to your Apple ID. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://secondbrain.icu/privacy

About

Socratus

Read full description

Socratus is a Personal knowledge management system that understands your notes, not just stores them. Ask questions, search by meaning, and see how your ideas connect, with AI that runs privately on your device. Think of it as your second brain, local-first and always under your control. FEATURES AI chat that answers from your own notes, with sources shown Private on-device AI that works offline Semantic and exact-word search with match scoring Interactive knowledge graph of related notes, exportable as an image Related notes ranked by similarity, with related-word tracing Distraction-free editor built for long-form thinking Markdown support and syntax highlighting Dictation, find and replace, adjustable font size, and one-tap save Structured tables with calculations and charts Daily scratchpad with Today's Notes Folders, a clear file tree, and recent files Import and read documents File-level encryption with QEncrypt Portable plain-text files with no lock-in Passwordless sign-in with a secure link WHO IT'S FOR Researchers, writers, students, developers, privacy-minded professionals, and anyone building a personal knowledge management system. PRICING Free for personal use. Professional and Enterprise licenses for commercial work. Turn your knowledge into a living system that grows with you. Socratus is a product of FiveRivers Technologies. Terms of Use (EULA): https://socratus.app/terms-of-service/ Privacy Policy: https://socratus.app/privacy-statement/

Screenshots

SecondBrain4 screens
Socratus4 screens

Verdict

The call

The clearest difference is update cadence: SecondBrain at every 3 days against Socratus's every 3 weeks. On price, ads, in-app purchases 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. SecondBrain sells 3 in-app purchases, starting at $8.99 per month and Socratus sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SecondBrain ships an update every 3 days, Socratus every 3 weeks. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.

Scorecard1 real difference · 9 level
SecondBrain versus Socratus: the parameters behind the verdict, then further details
ParameterSecondBrainSocratus
PriceFreeFree
Rating5.0 (6 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 3 days — betterEvery 3 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, Mac
Requires iOS15.1 — better16.0
Further details — not scored
Size73 MB148 MB
Age rating4+4+
DeveloperFederico CesariniPepper

In-app purchases

3 purchases

SecondBrain

Subscriptions3
  • SecondBrain Pro$8.991 Month
  • SecondBrain Pro Yearly3 Days trial$34.991 Year
  • SecondBrain Pro Yearly3 Days trial$44.991 Year
4 purchases

Socratus

Subscriptions4
  • Pro Monthly14 Days trial$4.991 Month
  • Pro Monthly$9.991 Month
  • Pro Yearly14 Days trial$49.991 Year
Show 1 more
  • Pro Yearly$99.991 Year

Questions

Is SecondBrain free?
SecondBrain is free to download, with in-app purchases available.
Is Socratus free?
Socratus is free to download, with in-app purchases available.
Do SecondBrain or Socratus have ads?
Both SecondBrain and Socratus show ads.
Which is updated more often, SecondBrain or Socratus?
SecondBrain ships an update every 3 days, and Socratus every 3 weeks. Most recently, SecondBrain was updated on October 10, 2026 and Socratus on October 3, 2026.

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