SecondBrain vs Adrina AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
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.
- Scan or upload documents
- AI-generated summaries
- Chat with your documents
- Track tasks and reminders
- Organize documents in folders
- Safe sharing with Trust Circle
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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
Verdict
The clearest difference is ads: Adrina AI at none against SecondBrain's shown. SecondBrain's advantage is update cadence (every 3 days vs every 2 weeks) and device support (3 vs 1). On price, rating, review sentiment and in-app purchases 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
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.
On the App Store both sit at effectively the same score — 5.0 for SecondBrain against 5.0 for Adrina AI. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
SecondBrain ships an update every 3 days, Adrina AI every 2 weeks. The most recent releases landed on October 10, 2026 and October 12, 2026 respectively.
| Parameter | SecondBrain | Adrina AI |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 6 — better | 2 |
| Update frequency | Every 3 days — better | Every 2 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 73 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Federico Cesarini | Adrina AI LLC |
Customer experience
SecondBrain
Adrina AI
In-app purchases
SecondBrain
- SecondBrain Pro$8.991 Month
- SecondBrain Pro Yearly3 Days trial$34.991 Year
- SecondBrain Pro Yearly3 Days trial$44.991 Year
Adrina AI
- Adrina Plus$4.991 Month
- Adrina Pro$7.991 Month
- Adrina Plus$49.991 Year
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- Adrina Pro$79.991 Year









