Best Second Brain Apps & Games

210+ iOS apps & games curated and reviewed

4.7 avg rating
20 free apps & games
Updated June 2026

From beginner-friendly picks to power-user tools, our second brain list covers 210+ iPhone apps and games updated through June 2026. Compare ratings, prices, and screenshots in one place.

Top Picks for Second Brain

Obsidian - Connected Notes#2

Obsidian - Connected Notes by Dynalist Inc.

Your second brain on the go
Strong Contender
📊 Productivity
4.5😊(2.4K ratings)
Free
#98in Productivity
Obsidian - Connected Notes screenshot 1
Obsidian - Connected Notes screenshot 2
Obsidian - Connected Notes screenshot 3
Obsidian - Connected Notes screenshot 4
Obsidian - Connected Notes screenshot 5
Obsidian - Connected Notes screenshot 6

Organize your thoughts and ideas with a powerful knowledge base that utilizes local Markdown files. This app acts as your personal second brain, accessible on your mobile device for seamless note-taking and idea connection.

What We Love

  • 🚀 Powerful features
  • 👍 Customizable and flexible
  • 🔒 Secure and private
  • 💡 Innovative note-taking approach

Room to Improve

  • 🐛 Sync issues and unreliable iCloud integration
  • 🔋 Slow startup and performance issues on mobile
  • 👎 Steep learning curve for new users
Second Brain - AI Chat#3

Second Brain - AI Chat by Tairs Rzajevs

GPT AI Assistant / AI Chatbot
Worth Considering
📊 Productivity
4.8(56 ratings)
FreeIn-App Purchases
Second Brain - AI Chat screenshot 1
Second Brain - AI Chat screenshot 2
Second Brain - AI Chat screenshot 3
Second Brain - AI Chat screenshot 4

This AI chatbot uses GPT technology to generate creative content like stories and songs, answer questions, and provide entertainment. It offers a premium subscription for enhanced features and a free trial period.

More Second Brain apps to explore

4
Brainee: Second Brain
Brainee: Second Brain
Brainee: Second Brain
Offline Notes, Tasks & Planner
Free
📊 Productivity
(0)
5
Notion: Notes, Tasks, AI
Notion: Notes, Tasks, AI
Notion: Notes, Tasks, AI
Task & project management app
Free

This AI-powered workspace helps you write notes, manage tasks, organize projects, and collaborate with others. It offers features like AI meeting notes and interactive maps to streamline your workflow for personal, student, or professional use.

AI-powered note-taking and summarizationTask and project managementCollaborative workspace
📊 Productivity
(88K)
free with in-app purchases
6
MyMemo: AI Second Brain
MyMemo: AI Second Brain
MyMemo: AI Second Brain
Your AI cofounder for ideas
Free

This AI-powered tool helps you manage and organize your personal knowledge by collecting digital content from various online sources. It uses AI to extract insights, answer your questions, and provide AI-driven recaps to stimulate learning and understanding.

Collects digital content from internet sourcesAI-driven content analysis and insight extractionAnswers user queries about collected knowledge
📊 Productivity
(142)
subscription
7
Mem – Your AI Thought Partner
Mem – Your AI Thought Partner
Mem – Your AI Thought Partner
Voice Notes, AI Chat, & Search
Free

This app acts as an AI-powered thought partner, capturing and organizing your ideas, meetings, and research. It allows you to use voice to create and edit notes, and an AI assistant can recall, summarize, and reorganize your information. It also surfaces relevant notes automatically and offers powerful search capabilities.

Voice-to-text note creation and editingAI-powered summarization and recallAutomatic organization and structuring of notes
📊 Productivity
(117)
free with in-app purchases
8
MindMark AI - Second Brain
MindMark AI - Second Brain
MindMark AI - Second Brain
AI second brain and notes
Free

Capture, organize, and instantly find information from various sources. This AI-powered tool automatically summarizes content and uses smart search to retrieve anything you need. Collaborate with others through shared folders for seamless idea exchange.

Instant capture of links, text, and screenshotsAI-generated summaries and insightsSmart search by keyword, concept, or context
📊 Productivity
(1)
free
9
Building a Second Brain
Building a Second Brain
Building a Second Brain
by Forte Labs, LLC
Free

This app helps you manage information overload and achieve your goals through personal knowledge management. Connect with a community focused on productivity and digital organization for a more peaceful and purposeful life.

PARA Method Mini-CourseCommunity HubExclusive event invitations
🌐 Social Networking
(10)
free
10
BerryBox - Second Brain
BerryBox - Second Brain
BerryBox - Second Brain
by Seungrae Cho
Free

Organize your thoughts, ideas, and to-dos with this digital notes app. AI can summarize your notes, and you can recreate content based on saved information. Manage everything in one place to maximize productivity.

AI note summarizationToodle List organizationEisenhower matrix view
📊 Productivity
(1)
ad-supported
11
Goodnotes: AI Notes, Docs, PDF
Goodnotes: AI Notes, Docs, PDF
Goodnotes: AI Notes, Docs, PDF
Note taking, canvas & work app
Free

Capture ideas, enhance productivity, and unlock insights with advanced AI features. This app offers tools for professionals, students, and creatives, including infinite whiteboards, AI-powered transcription and summarization, and customizable digital notebooks.

AI-powered transcription and summarizationInfinite whiteboard canvasDigital notebooks with customizable templates
📊 Productivity
(431K)
free with in-app purchases
12
Notion Calendar
Notion Calendar
Notion Calendar
For your work and life
Free

Manage your schedule and events with a unified view across multiple calendars. Integrate with your Notion workspace to link documents and projects directly to your events. Offers customizable widgets for quick access to upcoming appointments and event details.

Deep Google Calendar integrationConnect Notion docs and projectsMultiple time zone support
📊 Productivity
(6.8K)
free
13
Second Brain - AI Memory
Second Brain - AI Memory
Second Brain - AI Memory
Smart Journal & Voice Diary
Free

This AI-powered journal captures your thoughts via voice or text, automatically organizing and connecting them. It helps you recall memories, discover patterns, and reflect on your growth.

AI classification, tagging, and summarizationSemantic search by meaningThree-layer memory system
📊 Productivity
(1)
freemium
14
Impulse - Brain Training
Impulse - Brain Training
Impulse - Brain Training
Mental Health Games & Puzzles
Free

Enhance your cognitive abilities with personalized brain training games and puzzles. Discover your mental strengths and weaknesses through self-discovery tests, and track your progress over time to build a sharper mind.

Personalized daily training plansMemory & processing speed trainingAttention & focus exercises
📚 Education
(838K)
free with in-app purchases
15
To Do List MinimaList & Widget
To Do List MinimaList & Widget
To Do List MinimaList & Widget
Planner, Reminder & Tasks
Free

This app helps you organize your life with intuitive to-do lists, reminders, and a schedule planner. It offers customizable themes, shared lists, and widgets for easy task management. Stay productive with its focus timer and smart input features.

Intuitive and colored listsCustomizable themesShared lists
📊 Productivity
(44K)
free with in-app purchases
16
Two Dots - Connect the Colors
Two Dots - Connect the Colors
Two Dots - Connect the Colors
한붓그리기 퍼즐 게임
Free

Connect dots of the same color to solve puzzles and collect treasures. Embark on an interdimensional adventure through thousands of levels, enjoying relaxing music and brain-teasing challenges. Play solo or connect with friends for a fun, family-friendly experience.

Connect dots in lines or squaresThousands of brain-teasing levelsCollect treasures and trophies
🎮 Games
(170K)
free with in-app purchases
17
Second Brain
Second Brain
Second Brain
by KItelligence GmbH
Free
🔧 Utilities
(0)
18
Second Brain SB
Second Brain SB
Second Brain SB
by Gianlucca Vick
Free
📊 Productivity
(0)
19
TwinMind - AI Notes & Memory
TwinMind - AI Notes & Memory
TwinMind - AI Notes & Memory
Transcribe Meetings & Lectures
Free

This app acts as an AI-powered second brain, capturing and transcribing your conversations, meetings, and lectures. It automatically generates summaries, suggests tasks, and builds a searchable memory bank for personalized assistance and content generation, all while prioritizing user privacy.

AI-powered transcriptionAutomated summaries and action itemsSearchable memory bank
📊 Productivity
(845)
free
20
Peak - Brain Training
Peak - Brain Training
Peak - Brain Training
Better games for smarter minds
Free

Enhance your cognitive abilities with over 45 engaging games designed to improve memory, attention, problem-solving, and more. Track your progress with detailed insights and compete with friends. A free basic version is available, with an optional Pro upgrade for a full brain training experience.

45+ brain training gamesDaily WorkoutsCoffee Break mode
📚 Education
(146K)
free with in-app purchases

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