Comparison

TheBrain vs Shadow Security

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

TheBrain

This app helps you capture, connect, and visualize all your ideas, notes, and files across devices. It acts as a digital memory, showing related items and allowing for dynamic mind mapping and powerful search to help you recall information instantly.

Highlights
  • Award-winning visualization
  • Networked notes with backlinks
  • Dynamic mind mapping
  • Easy idea capture
  • Cross-device sync
  • Powerful search
  • Visual file management
Features
Read full description

YOUR DIGITAL MEMORY. VISUALIZED. TheBrain is the unique knowledge app that helps you capture everything — ideas, notes, web pages, files, photos — and connect it all the way you naturally think. Stop hunting through folders, tabs, and search bars. Start seeing your knowledge as a living network you can navigate with a tap. Described by the Wall Street Journal as "Software that thinks like you do" and MacLife as "the most compelling mind mapping adaptation we've encountered." Winner of KMWorld's Trendsetting Products award. WHY THEBRAIN? Traditional notes apps trap your ideas in folders, tags, or endless lists. TheBrain lets every piece of information connect to anything else — so the right idea finds you the moment you need it. It's note-taking, mind mapping, file management, and AI rolled into one beautiful experience that works the same on every device. KEY FEATURES CEREBRO — TALK TO YOUR BRAIN WITH AI Our built-in agentic AI assistant. Ask Cerebro anything — and let it create new thoughts and notes, surface exactly what you need, summarize long documents, suggest meaningful links, or just have a conversation about what you know. It can do anything you can do — only faster. DYNAMIC THOUGHT NETWORK Move beyond conventional mind maps and folders. TheBrain's animated visualization shows your ideas, their context, and the relationships between them — at any scale. Tap a thought, and the entire network reorganizes around it. NETWORKED NOTES Rich notes shown in context with automatic backlinks and concept discovery. Hybrid WYSIWYG + Markdown writing, powerful tables, resizable images, math, and folding — all the modern editor essentials. EVERYTHING IN ONE PLACE Attach web pages, PDFs, photos, and documents to any thought. Link people, projects, files, and ideas in a single living workspace. POWERFUL SEARCH Find any note, file, web page, or idea in seconds. Every match appears in the context of your thought network, so you instantly see how it relates to everything else you know. SEAMLESS SYNC ACROSS DEVICES Your brain is always with you. Mobile, Mac, Windows, Linux, and web stay in sync — even with large brains. Smart Sync downloads attachments on demand, keeping your brain fast and lightweight on every device. INFINITE SCALE Effortlessly handles hundreds of thousands of items and many gigabytes of data — without slowing down. COLLABORATE AND SHARE Publish your brain online for the world, or sync thoughts privately with your team. Great for shared knowledge bases, project planning, and team research. ==================================== WAYS TO USE THEBRAIN • Build your second brain — a living reflection of how you think, ready when you need it. • Manage everything in your life: projects, people, goals, files, and ideas in one place. • Capture interesting articles, videos, and references so they're activated when you need them. • Organize trips, travel, and major life events with all the right context at hand. • Power your research — go deeper on any concept and see how it connects to everything else. • Turn goals into action by linking them with the resources needed to achieve them. • Build a knowledge base that sparks new ideas and breakthroughs. • Link people, projects, and information for a smarter view of your business. • Create topic brains around your passions, hobbies, and special interests. • Plan personal projects like home renovations, weddings, or major purchases. GET STARTED IN MINUTES Start with a single thought — your name, a project, an idea you want to explore. Add a few connections. Within minutes you'll understand why people have trusted TheBrain for over two decades. For the best experience, install TheBrain on your phone, tablet, and computer. Our iPhone, iPad, Mac, Windows, and other mobile clients all sync seamlessly — your best thinking is always with you.

About

Shadow Security

Features
Read full description

PROTECT YOUR DOCUMENTS FROM AI ATTACKS Shadow Security is the first PDF security app with AI-powered threat detection. Scan documents for prompt injection, data exfiltration, malware, and 160+ other sophisticated attacks. ENTERPRISE-GRADE SECURITY FOR EVERYONE • 160+ Threat Detection Patterns across 30 categories • AI Attack Protection (prompt injection, jailbreaks) • Malware & Virus Detection • Hidden Text Detection (steganography) • Data Exfiltration Prevention • SQL Injection & XSS Detection • Command Injection Protection • And much more... PROFESSIONAL PDF TOOLS INCLUDED • Full-featured PDF viewer with smooth scrolling • Annotations: highlights, notes, drawings, signatures • Form filling and editing • OCR text extraction • Page management and organization • Export to multiple formats • Print with advanced options 100% PRIVATE & SECURE • All scanning happens on YOUR device • No cloud uploads or data collection • No internet connection required • Your documents never leave your device • AES-256 encryption for sensitive data • GDPR, HIPAA, CCPA compliant CLEAN FILE EXPORT • Remove all detected threats automatically • Scrub metadata and EXIF data • Export sanitized versions of documents • Verify clean files with re-scanning • Batch cleaning for multiple files COMPLIANCE TRACKING • GDPR compliance monitoring • HIPAA compliance features • SOC2 compliance tracking • PCI-DSS compliance support • Audit logging and reporting • Enterprise-ready compliance tools ADVANCED FEATURES • Batch scanning for multiple files • Scheduled automatic scans • Folder watching and monitoring • Detailed threat reports (PDF, JSON, CSV) • Threat severity classification • Real-time security dashboard • AI-powered threat intelligence MULTI-PLATFORM • Native macOS app (Apple Silicon + Intel) • Native iOS app (iPhone + iPad) • iCloud sync across devices • Handoff support • Universal purchase PERFECT FOR • Business professionals handling sensitive documents • Healthcare providers (HIPAA compliance) • Legal professionals • Financial services • Government agencies • Privacy-conscious individuals • Anyone who values document security WHY SHADOW SECURITY? In an era of AI-powered attacks, traditional security tools aren't enough. Shadow Security uses advanced algorithms to detect sophisticated threats that other apps miss: • Prompt injection attacks that manipulate AI systems • Jailbreak techniques that bypass security controls • Hidden malicious code in seemingly innocent documents • Data exfiltration attempts • Social engineering attacks • And 155+ other threat patterns TRUSTED BY PROFESSIONALS Shadow Security is built by security experts and trusted by professionals worldwide. Our threat detection algorithms are constantly updated to protect against the latest attacks. EASY TO USE Despite its advanced capabilities, Shadow Security is incredibly easy to use: 1. Open any PDF, Word doc, or image 2. Tap "Scan for Threats" 3. Review detailed results 4. Export clean version if needed TERMS OF USE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

TheBrain4 screens
Shadow Security4 screens

Verdict

The call

The clearest difference is update cadence: TheBrain at every 3 weeks against Shadow Security's every 5 months. TheBrain also leads on iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. TheBrain sells 2 in-app purchases, starting at $17.99 per month and Shadow Security sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

TheBrain ships an update every 3 weeks, Shadow Security every 5 months. The most recent releases landed on October 22, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 8 level
TheBrain versus Shadow Security: the parameters behind the verdict, then further details
ParameterTheBrainShadow Security
PriceFreeFree
Rating4.8 (167 ratings) — better—
Positive reviews44.3% of reviews—
Number of ratings167 — better—
Update frequencyEvery 3 weeks — betterEvery 5 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size252 MB5 MB
Age rating4+4+
DeveloperTheBrain Technologies LPStephen Luadzers

Bugs and requests

TheBrain

Reported bugs

5 issues
  • Crashes on iOS 9
  • Inability to open brains
  • Freezing after each action
  • Login and account issues
  • Sync problems

Requested features

7 requests
  • Offline mode
  • Improved mobile UI and UX
  • Better integration with other apps
  • More affordable pricing options
  • Enhanced search and filtering
Show 2 more
  • Split-screen support on iPad
  • Handwriting and stylus support

Shadow Security

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

TheBrain

Subscriptions2
  • TheBrain Pro Monthly$17.991 Month
  • TheBrain Pro Annual$189.991 Year
1 purchases

Shadow Security

Subscriptions1
  • Shadow Security Monthly3 Days trial$0.991 Month

Questions

Is TheBrain free?
TheBrain is free to download, with in-app purchases available.
Is Shadow Security free?
Shadow Security is free to download, with in-app purchases available.
Do TheBrain or Shadow Security have ads?
Neither TheBrain nor Shadow Security shows ads.
Which is updated more often, TheBrain or Shadow Security?
TheBrain ships an update every 3 weeks, and Shadow Security every 5 months. Most recently, TheBrain was updated on October 22, 2026 and Shadow Security on October 12, 2026.

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