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Second Brain - Know Yourself

Second Brain - Know Yourself

Weekly self-insight, no diary

2 ratings
1 review
🌟 Lifestyle
📊 Productivity
Free
In-App Purchases

Details

Released
March 16, 2026
Updated
November 3, 2026

Features

Developer

Liwei Xie
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About

Capture thoughts and ideas effortlessly with voice or text input. This app analyzes your weekly entries to provide personalized insights and summaries. It helps you recall past information and manage personal contacts with smart reminders and widgets.

✓Weekly self-insight summaries
✓Voice and text note capture
✓Search notes by meaning
✓Contact management with reminders
✓Home and Lock Screen widgets
✓Optional iCloud sync
✓Data export (JSON, Markdown)
Show original description

What's New in Second Brain

1.7.7

November 3, 2026

• Reply to the evening reminder right from the notification. One line and it's saved, no need to open the app • A Control Center button starts a voice note, even from the lock screen • The Action Button can start one too (look for Second Brain in Shortcuts) • Pick the evening reminder time when you set up the app • Fixed a rare case where a weekly recap failed to generate

More
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Subscriptions & In-App Purchases

Second Brain Pro

Unlimited captures, explorations, reflections & more

$4.991 Month
7 Days trial
How to cancel Second Brain subscription ⁉️

User reviews

Most RecentHighest RatedLowest Rated

Fantastic

This is exactly what i needed. i love using this app, BUT the icloud sync across iphone and macbook does not seem to work. As I use it i feel that I’ll think of some improvements since id be using it every day, but this is a game changer for me
Iitstylervasquez

Response from developer

Thanks! You were right, iCloud sync was broken. It's fixed now, so update to the latest version and it should sync between your devices. If it still doesn't, email me at info@smartkiitos.com. I'd also like to hear those improvements when you have them.

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FAQ

What is the core function of Second Brain?

Second Brain analyzes your weekly notes to provide insights into what occupied your attention, changes from the previous week, and suggestions for improvement. It aims to make your captured thoughts actionable and understandable.

How does Second Brain handle privacy and data security?

Your notes are stored locally on your device. For AI processing, text is sent to a cloud AI service unless Apple Intelligence is enabled for on-device processing. iCloud sync is optional and uses your own account.

What are the differences between the free and Pro versions of Second Brain?

The free version offers limited notes per day, daily reflections, and your first weekly insight. The Pro version provides unlimited notes, unlimited insights, advanced search capabilities, iCloud sync, and additional themes.

How can I cancel my Second Brain Pro subscription?

You can manage or cancel your subscription through your App Store account settings. Cancellations must be made at least 24 hours before the end of the current billing period to avoid automatic renewal.

Does Second Brain have ads?

No, Second Brain does not contain advertisements. The app offers a free tier with limitations and a premium subscription for full access.

What platforms is Second Brain available on?

Second Brain is currently available on iPhone. It supports Home Screen and Lock Screen widgets, with checklist functionality available as a Live Activity.

How often is Second Brain updated?

The app was last updated on November 3, 2026, with version 1.7.7. This indicates a relatively recent update, suggesting ongoing development and support.

Can I export my data from Second Brain?

Yes, you can export all your notes in JSON or Markdown format at any time for free. This allows you to retain ownership and use your data outside of the application.