TheBrain vs ConnectionOpen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Award-winning visualization
- Networked notes with backlinks
- Dynamic mind mapping
- Easy idea capture
- Cross-device sync
- Powerful search
- Visual file management
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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.
ConnectionOpen
Experience real-time, high-quality audio and video collaboration with near-zero latency. Ideal for musicians, podcasters, and voiceover artists to connect and create together remotely, as if in the same room.
- Uncompressed, high-quality audio
- Low-latency live video streaming
- Real-time online collaboration
- Remote jamming and practice for musicians
- Live podcast recording with guests
- Voiceover work with live feedback
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ConnectionOpen let’s you communicate and collaborate in real time online, with low-latency uncompressed audio of the highest quality. Available on Mac, inside your DAW, and now iOS too, ConnectionOpen also features live video streaming in sync with crystal clear uncompressed audio. With close to zero latency, ConnectionOpen is perfect for a wide variety of potential uses: Voiceover artists: Work directly with studios with the best quality audio, and get live feedback on your performances - now get the ultimate portability of our iOS app for iPhone and iPad. Podcasters: record live with co-hosts and interview guests wherever you are, and feel as if you were in the same room thanks to ConnectionOpen’s super low latency. Musicians: Jam, practice and perform together, miles apart in perfect sync with no compromise in audio quality. It’s easy to create a session and get connected to anyone in the world in minutes and experience fantastic quality audio with next to no latency. No more distortion, no more call drop outs, no lag - just crystal clear audio in sync with live video streaming. It’s the perfect platform to creatively collaborate online together, as if you were in the same studio. With a range of day passes and monthly subscription plans to choose from, ConnectionOpen can be tailored to your usage and workflow. Read more about our terms and conditions here: https://www.connectionopen.com/terms-and-conditions
Screenshots
Verdict
The clearest difference is review sentiment: ConnectionOpen at 100% against TheBrain's 44%. ConnectionOpen also leads on rating (5.0 vs 4.8) and iOS requirement (13.0 vs 15.0). TheBrain's advantage is monetization model (free with in-app purchases vs subscription) and ratings volume (150 vs 4). On price, ads and in-app purchases 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
Both are free to download. TheBrain sells 2 in-app purchases, starting at $17.99 per month and ConnectionOpen sells 4 in-app purchases, starting at $24.99 per month. Whichever you choose, the download price is not the number that matters.
ConnectionOpen holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: TheBrain has 150 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 44% of TheBrain's written reviews are positive against 100% of ConnectionOpen's.
TheBrain ships an update monthly, ConnectionOpen every 2 months. The most recent releases landed on October 13, 2026 and October 5, 2026 respectively.
| Parameter | TheBrain | ConnectionOpen |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (150 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 44.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 150 — better | 4 |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 240 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | TheBrain Technologies LP | ConnectionOpen, Inc. |
Customer experience
TheBrain
ConnectionOpen
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
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- Split-screen support on iPad
- Handwriting and stylus support
ConnectionOpen
Not enough reviews yet to summarise bugs or requests.
In-app purchases
TheBrain
- TheBrain Pro Monthly$17.991 Month
- TheBrain Pro Annual$189.991 Year
ConnectionOpen
- Basic Plan14 Days trial$24.991 Month
- Standard Plan14 Days trial$49.991 Month
- Pro Plan14 Days trial$99.991 Month
- Day Pass$9.99









