Comparison

SecondBrain vs Adrina AI

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

Head to head
About

SecondBrain

Capture thoughts effortlessly with AI-powered voice notes. This app transcribes, titles, and organizes your spoken ideas into a dynamic knowledge graph. Access your information through summaries, chat, and powerful search.

Highlights
  • AI transcription and titling
  • Automatic organization into a folder tree
  • Voice to schedule event creation
  • Daily morning briefing summaries
  • Chat interface for querying notes
  • 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

Adrina AI

Organize and understand your family's important documents. Scan or upload files, get AI-powered summaries, ask questions about content, and track action items. Safely share information with trusted individuals.

Highlights
  • Scan or upload documents
  • AI-generated summaries
  • Chat with your documents
  • Track tasks and reminders
  • Organize documents in folders
  • Safe sharing with Trust Circle
Features
Read full description

Adrina AI helps you keep family paperwork clear, searchable, and actionable. Scan or upload documents, review AI-generated summaries, ask questions about saved paperwork, track action items, and share important information with trusted people. Adrina is built for everyday family admin: bills, notices, appointments, forms, school papers, insurance documents, and other practical records. Key features: - Upload or scan documents - Review summaries and important details - Chat with your documents - Track tasks and reminders - Organize documents in folders - Share safely with your Trust Circle - Manage plan limits from your account Adrina AI is designed to support organization and understanding, not to replace professional advice. Always review important documents yourself and consult qualified professionals for legal, medical, financial, tax, or immigration decisions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.adrina.ai/privacy

Screenshots

SecondBrain4 screens
Adrina AI4 screens

Verdict

The call

The clearest difference is ads: Adrina AI at none against SecondBrain's shown. Adrina AI also leads on rating (5.0 vs 4.7). SecondBrain's advantage is update cadence (every 3 days vs every 2 weeks) and ratings volume (10 vs 2). On price, review sentiment, in-app purchases and monetization model 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 Adrina AI sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Adrina AI holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: SecondBrain has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

SecondBrain ships an update every 3 days, Adrina AI every 2 weeks. The most recent releases landed on November 13, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
SecondBrain versus Adrina AI: the parameters behind the verdict, then further details
ParameterSecondBrainAdrina AI
PriceFreeFree
Rating4.7 (10 ratings)5.0 (2 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings10 — better2
Update frequencyEvery 3 days — betterEvery 2 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better17.0
Further details — not scored
Size73 MB9 MB
Age rating4+4+
DeveloperFederico CesariniAdrina AI LLC

Customer experience

SecondBrain

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Adrina AI

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Adrina AI

Subscriptions4
  • Adrina Plus$4.991 Month
  • Adrina Pro$7.991 Month
  • Adrina Plus$49.991 Year
Show 1 more
  • Adrina Pro$79.991 Year

Questions

Is SecondBrain free?
SecondBrain is free to download, with in-app purchases available.
Is Adrina AI free?
Adrina AI is free to download, with in-app purchases available.
Which has better reviews, SecondBrain or Adrina AI?
Adrina AI is rated higher. SecondBrain averages 4.7 out of 5 from 10 ratings, while Adrina AI averages 5.0 from 2 ratings.
Do SecondBrain or Adrina AI have ads?
SecondBrain shows ads; Adrina AI does not.
Which is updated more often, SecondBrain or Adrina AI?
SecondBrain ships an update every 3 days, and Adrina AI every 2 weeks. Most recently, SecondBrain was updated on November 13, 2026 and Adrina AI on October 31, 2026.

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