Building a Second Brain vs Eluum
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Building a Second Brain
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-Course
- Community Hub
- Exclusive event invitations
- Notetaking and creativity resources
- Gateway to comprehensive courses
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Building a Second Brain is your learning community to help you transform information overload into clarity and consistent progress toward your most important goals. Here, you’ll connect with individuals who thoughtfully turn productivity, personal knowledge management, and digital organization into tools for living a more peaceful, purposeful, and fulfilling life. WHAT’S INSIDE: PARA Method Mini-Course: Learn the simple, intuitive system to tame your digital chaos and find any information right when you need it. Community Hub: Get exclusive event invitations, updates, and content—including videos and resources focused on all things notetaking, creativity, and working more intentionally. Gateway to Learning: The app is your entry point into our comprehensive courses and broader community of like-minded learners. When you master the flow of information through your life, you can accomplish anything you set your mind to. But if you continue to rely on your fragile biological brain, you’ll likely become ever more overwhelmed by the explosive growth in the complexity of your life. Download the app and start building your Second Brain today.
Eluum
This app provides a digital space to preserve life's moments and stories using AI. It focuses on making memories experiential for future generations, going beyond simple storage.
- AI-powered memory preservation
- Experiential memory experience
- Digital home for life's story
- Generational memory archiving
- Save life's moments
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Eluum creates a home for your life’s story, where AI helps preserve your memories to be experienced—not just stored—for generations to come.
Screenshots
Verdict
The clearest difference is review sentiment: Eluum at 100% against Building a Second Brain's 50%. Eluum also leads on update cadence (every 11 days vs every 4 months) and rating (5.0 vs 4.7). Building a Second Brain's advantage is ratings volume (15 vs 3). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.
Eluum holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Building a Second Brain has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 50% of Building a Second Brain's written reviews are positive against 100% of Eluum's.
Building a Second Brain ships an update every 4 months, Eluum every 11 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Building a Second Brain | Eluum |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (15 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 15 — better | 3 |
| Update frequency | Every 4 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.4 | 15.1 — better |
| Further details — not scored | ||
| Size | 90 MB | 50 MB |
| Age rating | 17+ | 17+ |
| Developer | Forte Labs, LLC | Eluum |
Customer experience
Building a Second Brain
Eluum
In-app purchases
Building a Second Brain
No in-app purchases
Eluum
No in-app purchases
