SecondBrain · Office #53,625

What it is

Calls itself “second brain app”.

• Calls itself: second brain app

“SecondBrain is an AI second brain app for iPhone and Android.”

Where it puts itself

Rules out “ads”, “analytics” and “training”.

• Says it will not: ads · analytics · training

“SecondBrain is built around two things: voice capture that becomes structured notes, calendar events and reminders on your phone, and one shared memory your AI assistants read and write through MCP.”

“No analytics. No ads. No training.”

What it costs

Has a free plan.

• Free plan: yes

“Free: 10 notes and 3 AI requests a day.”

Who it sells to

Sells to consumers.

• Sells to: consumers

“The SecondBrain app is free to download and use on iPhone, Android and the web”

How it runs

A mobile app and web app for Android and iOS. Hosted in the cloud. Distributed through the App Store and Play Store. Offers an API. AI is the core of the product.

• Kind: mobile · web
• Runs on: Android · iOS
• Runs where: cloud / hosted
• Distributed via: App Store · Play Store
• API: yes
• AI role: core to the product

“…iPhone, Android and web.”

“New since our June launch: SecondBrain is rebuilt around your voice, and it now runs in your browser too.”

What it works with

Plugin for Claude. Names ChatGPT, Claude Code and 3 more on its pages.

• Plugin for: Claude
• Names: ChatGPT · Claude Code · Cursor · +2

“Pro adds one shared memory for Claude, ChatGPT, Gemini and Cursor over MCP.”

“Claude Code: claude plugin marketplace add fed3c3sa/secondbrain-shared-memory”

What it offers as proof

Live, no waitlist. Try it without signing up.

• Instant signup: yes
• Trial asks for: nothing

“The SecondBrain app is free to download and use on iPhone, Android and the web”

“The SecondBrain app is free to download and use on iPhone, Android and the web, and on the free plan you can capture, organize and recall your notes.”