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Best Second Brain Sb Apps

245+ iOS apps curated and reviewed

4.7 avg rating
20 free apps
Updated June 2026

Second Brain SB is the household name in second brain sb, but it's far from the only option. We track 245+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Second Brain Sb Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Second Brain SBSecond Brain SBFree——NoMay 2026
2Impulse - Brain TrainingImpulse - Brain TrainingFree4.7★ (838K)YesYesJul 2026
3Perplexity - AI Search & ChatPerplexity - AI Search & ChatFree4.8★ (487K)NoYesJul 2026
4AI Chatbot: PixiAI Chatbot: PixiFree4.7★ (12K)YesYesJul 2026
5Vidmor-AI Video GeneratorVidmor-AI Video GeneratorFree4.5★ (4.3K)YesYesJul 2026
6BrainGain - IQ Brain TrainingBrainGain - IQ Brain TrainingFree4.7★ (22K)NoYesJul 2026
7Chat Smith: AI Chatbot & AgentChat Smith: AI Chatbot & AgentFree4.6★ (167K)YesYesJul 2026
8Brainbuddy: Quit PMOBrainbuddy: Quit PMOFree4.7★ (25K)YesYesJul 2026

Top Picks for Second Brain Sb

Impulse - Brain Training#2

Impulse - Brain Training by GMRD Apps Limited

Mental Health Games & Puzzles
Strong Contender
📚 Education
4.7😊(838K ratings)
FreeAdsIn-App Purchases
#12in Education
Impulse - Brain Training screenshot 1
Impulse - Brain Training screenshot 2
Impulse - Brain Training screenshot 3
Impulse - Brain Training screenshot 4
Impulse - Brain Training screenshot 5
Impulse - Brain Training screenshot 6

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.

What We Love

  • 🤩 Engaging and fun brain games
  • 🧠 Helpful for improving focus, memory, and cognitive abilities
  • 📈 Tracks progress and compares to peers
  • 🧘‍♀️ Relaxing and calming experience

Room to Improve

  • 💰 Expensive subscription model, with limited free access
  • 🤖 Misleading ads and paywalls for test results
  • 🙄 Excessive ads and upselling in free version
Perplexity - AI Search & Chat#3

Perplexity - AI Search & Chat by Perplexity AI, Inc.

Ask. Research. Trusted Answers
Worth Considering
📊 Productivity
4.8😊(487K ratings)
FreeIn-App Purchases
#5in Productivity
Perplexity - AI Search & Chat screenshot 1
Perplexity - AI Search & Chat screenshot 2
Perplexity - AI Search & Chat screenshot 3
Perplexity - AI Search & Chat screenshot 4
Perplexity - AI Search & Chat screenshot 5
Perplexity - AI Search & Chat screenshot 6

Get accurate, source-backed answers to any question with this AI-powered search and chat tool. It leverages top AI models for deep research, drafting emails, and more, syncing across devices. Discover new information and organize your findings in a personal library.

What We Love

  • 🚀 Saves time, fast and efficient
  • 🔍 Comprehensive and detailed answers
  • 📚 Provides sources and citations
  • 🤖 Excellent AI-powered search

Room to Improve

  • 🐛 Occasional bugs and glitches
  • 🔒 Restrictions on VPN usage
  • 💰 Expensive subscription

More Second Brain Sb apps to explore

4
AI Chatbot: Pixi
AI Chatbot: Pixi
AI Chatbot: Pixi
Chat built on top Al models
Free

This AI-powered app offers a suite of tools for writing, content creation, and task simplification. It leverages advanced AI models to generate images, logos, summaries, and assist with various writing needs. Users can also interact with AI expert assistants for advice and support.

AI Writing AssistantText-to-Image CreationLogo Studio
📊 Productivity
(12K)
free with in-app purchases
5
Vidmor-AI Video Generator
Vidmor-AI Video Generator
Vidmor-AI Video Generator
AI Video Art Creation
Free

This app uses AI to generate images and videos from text prompts and existing images. It offers a variety of creative tools, templates, and effects to help users create engaging social media content quickly and easily, even without editing experience.

AI Text-to-Image generationImage Style Transfer with 100+ filtersAI Text-to-Video creation
🎨 Graphics & Design
(4.3K)
subscription
6
BrainGain - IQ Brain Training
BrainGain - IQ Brain Training
BrainGain - IQ Brain Training
Solve Puzzles & Quizzes Daily
Free

Engage in daily brain training with adaptive games and mental tests designed to improve memory, focus, problem-solving, math, and language skills. Choose short bursts or longer sessions to fit your schedule and track your progress.

Adaptive cognitive gamesDaily brain workoutsBuild memory and focus
📚 Education
(22K)
free with in-app purchases
7
Chat Smith: AI Chatbot & Agent
Chat Smith: AI Chatbot & Agent
Chat Smith: AI Chatbot & Agent
Study, Writing, Research Agent
Free

This AI assistant offers advanced capabilities for writing, research, and image generation. It leverages multiple powerful AI models to provide deep insights, create content, and simplify tasks. Ideal for students, professionals, and creatives seeking enhanced productivity.

AI Image GeneratorAI Writing AssistantDeep Research with Sources
📊 Productivity
(167K)
free with in-app purchases
8
Brainbuddy: Quit PMO
Brainbuddy: Quit PMO
Brainbuddy: Quit PMO
Site Blocker Addiction Tracker
Free

This app helps users break free from digital habits and addictive behaviors through a neuroscience-based approach. It offers educational programs, progress tracking, and community support to rewire the brain and improve self-control.

Neuroscience-based habit rewiring program100-day evidence-based educationProgress tracking and daily checkups
💪 Health & Fitness
(25K)
free with in-app purchases
9
Second Me - Your Digital Mind
Second Me - Your Digital Mind
Second Me - Your Digital Mind
Put your AI to work
Free

This social network uses AI to handle the initial social legwork, connecting you with people based on deep resonance rather than superficial criteria. Your AI identity learns from you to find meaningful connections, acting as a social concierge to maintain relationships.

Dynamic AI identity learns from user dataConnection based on deep personality resonanceAI handles initial social legwork and small talk
🌐 Social Networking
(152)
free with in-app purchases
10
AI Chat Assistant – ChatNow
AI Chat Assistant – ChatNow
AI Chat Assistant – ChatNow
Built on Gemini, GPT, Grok 4
Free

This AI assistant helps busy individuals boost productivity by handling tasks like writing emails, generating code, creating images, and summarizing documents. It supports voice input, file uploads, and image analysis, leveraging multiple advanced AI models for diverse needs.

Voice mode for real-time conversationsImage and video generationWriting and grammar assistance
📊 Productivity
(135K)
free with in-app purchases
11
Chat AI: Ask Agent Anything
Chat AI: Ask Agent Anything
Chat AI: Ask Agent Anything
Chatbot & Search Assistant
Free

Engage in personalized conversations with an AI that understands and adapts to you. Access specialized AI assistants for various tasks, generate unique images from text, and get instant information about the world through photos. This app also offers writing assistance, language learning, and homework help.

Personalized AI conversationsSpecialized AI assistantsAI image generation
📊 Productivity
(325K)
free with in-app purchases
12
Kimi - Kimi K3 is Live
Kimi - Kimi K3 is Live
Kimi - Kimi K3 is Live
K2.5·Visual·Agent·Code·Office
Free

This AI-powered agent assists with coding, content creation, and office tasks. It can generate presentations, build websites from designs, and perform complex research with autonomous sub-agents for enhanced efficiency. Handle large documents and detailed conversations with its extensive context window.

Autonomous sub-agent creation for parallel efficiencyCode, create, analyze, and build presentationsAutomate workflows with scheduled tasks and long-term memory
📊 Productivity
(4.7K)
freemium
13
Chatbot AI Assistant - Genie
Chatbot AI Assistant - Genie
Chatbot AI Assistant - Genie
AI Chatbot & Image Generator
Free

This AI-powered assistant helps with work, study, and creative projects. It offers advanced chat, image generation and editing, document analysis, and web search capabilities. Get instant insights and create visuals from text descriptions.

Advanced AI ChatbotAI Image GeneratorAI Image Editor
📊 Productivity
(198K)
free with in-app purchases
14
AI ChatBot Assistant: AskEasy
AI ChatBot Assistant: AskEasy
AI ChatBot Assistant: AskEasy
Top Chat Built on All Models
Free

This AI assistant helps with daily tasks, answering queries, writing content, and generating images. It can also summarize documents, translate languages, and create captions for photos, making life more efficient and fun.

AI Image GeneratorAI Writing AssistantUpload and Ask (PDFs)
📊 Productivity
(30K)
subscription
15
Chatbot AI Assistant ChatPrime
Chatbot AI Assistant ChatPrime
Chatbot AI Assistant ChatPrime
Top AI Models, Image Generator
Free

Access advanced AI models for text generation, coding, learning, and image creation in a single application. Engage in smarter conversations, get real-time insights, and produce stunning visual results with cutting-edge AI engines.

Advanced text generationMultilingual conversationsReal-time insights
📊 Productivity
(4.3K)
free with in-app purchases
16
ChatBox AI - Chatbot Assistant
ChatBox AI - Chatbot Assistant
ChatBox AI - Chatbot Assistant
Top Al models・Image Generator
Free

This AI-powered assistant offers a suite of tools for text generation, image creation, document processing, and real-time information retrieval. It can help with writing, problem-solving, brainstorming, and even generating music and stories.

AI text generationAI image generationDocument summarization and translation
📊 Productivity
(164K)
free with in-app purchases
17
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
18
TeraBox: 1TB Cloud & AI Space
TeraBox: 1TB Cloud & AI Space
TeraBox: 1TB Cloud & AI Space
Data Backup & Smart AI Tools
Free

This app offers 1024GB of free cloud storage for automatic file backup and synchronization across devices. It also integrates a suite of AI tools for smart searching, image creation, transcription, video playback with subtitles, and document management.

1024GB Free Cloud StorageAutomatic Data BackupAI-Powered Search & Browsing
📊 Productivity
(19K)
freemium
19
Sider: AI GPT Deep Chat
Sider: AI GPT Deep Chat
Sider: AI GPT Deep Chat
Top AI Models All in One.
Free

This AI assistant offers access to multiple advanced language models for tasks like summarization, writing, image generation, and homework help. It also functions as a knowledge base, allowing users to chat with documents and websites, and engage with diverse AI characters.

Access to multiple top AI modelsSummarize documents and articlesGenerate creative images from text
📊 Productivity
(4.2K)
free with in-app purchases
20
AI Chatbot - Ask AI Anything‎
AI Chatbot - Ask AI Anything‎
AI Chatbot - Ask AI Anything‎
Built on OpenAI ChatGPT & GPT5
Free

This app provides a sophisticated conversational experience by leveraging advanced language models like ChatGPT, Grok, and Claude. It understands natural language and generates human-like responses for a wide range of topics and tasks. Features include email automation, document generation, and visual analysis.

Conversational AI assistantEmail reply automationDocument content generation
📊 Productivity
(121)
free with in-app purchases

FAQ about Second Brain Sb

Are there free second brain sb apps for iPhone?
Yes — 20 of the top second brain sb apps we rank are free to download, including Second Brain SB and Impulse - Brain Training.
Second Brain SB has no in-app purchases, according to its App Store listing as of June 2026.
We track 245+ second brain sb apps on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.