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
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

Access your second brain on-the-go with this powerful knowledge base app that organizes plain text Markdown files in a local folder. Enjoy features like customizable toolbar, quick actions, graph view, community plugins, themes, and iCloud vaults.

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-powered chatbot can write stories, songs, answer questions, tell jokes, and perform many more tasks, providing users with a unique interactive experience. Try it out and discover the possibilities of conversing with a cutting-edge AI assistant!

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

A versatile all-in-one workspace for notes, docs, and tasks with integrated AI support. Easily organize projects and collaborate with teams. Get started for free today!

📊 Productivity
(86K)
6
MyMemo: AI Second Brain
MyMemo: AI Second Brain
MyMemo: AI Second Brain
Your AI cofounder for ideas
Free

A powerful AI-driven knowledge management tool that organizes digital content for intelligent retrieval and analysis. Experience seamless content curation, personalized knowledge insights, and AI-generated responses. Subscribe for secure and efficient information management.

📊 Productivity
(140)
7
Mem – Your AI Thought Partner
Mem – Your AI Thought Partner
Mem – Your AI Thought Partner
Voice Notes, AI Chat, & Search
Free

Mem - AI Notes, Search is an innovative application that uses artificial intelligence to help users organize and search through their notes effortlessly. With smart categorization and powerful search capabilities, it streamlines note-taking and retrieval processes. Experience a smarter way to manage your notes and increase productivity.

📊 Productivity
(110)
8
MindMark AI - Second Brain
MindMark AI - Second Brain
MindMark AI - Second Brain
AI second brain and notes
Free

This AI-powered tool serves as a second brain, allowing users to capture, organize, and retrieve information from various sources with ease. By utilizing features such as smart search, auto-tagging, and AI summaries, users can streamline their thinking, learning, and productivity, while maintaining a private and secure digital memory.

📊 Productivity
(1)
9
Building a Second Brain
Building a Second Brain
Building a Second Brain
by Forte Labs, LLC
Free

Transform your information overload into clarity and consistent progress toward your goals by joining a community that helps you tame digital chaos and work more intentionally. Get access to exclusive resources, events, and courses to help you master the flow of information and achieve your goals.

🌐 Social Networking
(10)
10
BerryBox - Second Brain
BerryBox - Second Brain
BerryBox - Second Brain
by Seungrae Cho
Free
📊 Productivity
(1)
11
Goodnotes: AI Notes, Docs, PDF
Goodnotes: AI Notes, Docs, PDF
Goodnotes: AI Notes, Docs, PDF
Note taking, canvas & work app
Free

Revolutionize your note-taking experience with an all-in-one digital notebook app that combines handwriting, typing, images, and AI capabilities for smarter notes. From students acing exams to professionals boosting productivity, Goodnotes 6 offers unlimited digital notebooks with seamless synchronization and innovative features. Try Goodnotes today for a year of unlimited, backed up, and searchable digital notes.

📊 Productivity
(429K)
12
Notion Calendar
Notion Calendar
Notion Calendar
For your work and life
Free

An advanced calendar app seamlessly integrated with Google Calendar, featuring powerful functionalities like connecting with Notion, multiple time zones, unified view across calendars, widgets, and support for 12 languages. Take control of your time like never before - it's time.

📊 Productivity
(2.5K)
13
Second Brain - AI Memory
Second Brain - AI Memory
Second Brain - AI Memory
Smart Journal & Voice Diary
Free
📊 Productivity
(0)
14
Impulse - Brain Training
Impulse - Brain Training
Impulse - Brain Training
Mental Health Games & Puzzles
Free

"Boost your mental fitness with our fun brain training games designed to improve memory, focus, and cognitive skills. Start your mental fitness journey today!"

💪 Health & Fitness
(834K)
15
To Do List MinimaList & Widget
To Do List MinimaList & Widget
To Do List MinimaList & Widget
Planner, Reminder & Tasks
Free

MinimaList: To Do List is a productivity app that helps you organize tasks with ease. Stay on top of your daily goals and boost your efficiency. Try it now for a streamlined task management experience!

📊 Productivity
(44K)
16
Two Dots - Connect the Colours
Two Dots - Connect the Colours
Two Dots - Connect the Colours
한붓그리기 퍼즐 게임
Free

Connect lines of Dots, match colors, and solve puzzles in this free brain-teasing adventure game. With over 5000 levels, smart puzzles, and fun challenges, Two Dots is the perfect way to relax and test your skills. Join now and start making connections!

🎮 Games
(16K)
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

TwinMind is an AI-powered productivity tool that captures your digital life, automatically transcribes and summarizes meetings and conversations, and provides personalized suggestions and assistance to boost your productivity. With a focus on privacy, TwinMind offers a secure and centralized platform to help you stay organized and efficient. Explore the app and take advantage of its powerful features.

📊 Productivity
(509)
20
Peak - Brain Training
Peak - Brain Training
Peak - Brain Training
Better games for smarter minds
Free

Challenge your mind and maximize your potential with a collection of 45 brain-training games across six categories. Track your progress, compete with friends, and unlock your full brain training experience with Peak - the ultimate mental workout app. Download for free or upgrade to Pro for advanced training modules. Start your brain training journey today!

📚 Education
(146K)

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