Second Brain

Content rating
Everyone
1+
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Content rating
Everyone
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About this app

Second Brain is a simple place to keep what's on your mind, so you don't have to.

Write about your day. Keep a page for each day and look back whenever you want.

Keep your notes. Ideas, lists and plans, all in one place and easy to find.

Track your tasks. Add what you need to do and tick it off when it's done.

Clear your head, and let your second brain remember the rest.
A calm place for your days, notes and tasks. Write a little, find anything.
Updated on
Oct 22, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, App activity, and App info and performance
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

A new look, in light and dark.
The Journal: one page for every day, with search.
A short tour for new users.
Journal pages written on the phone and on the web no longer overwrite each other.
Undo right in the task list.