# TheBrain vs Seylo

The clearest difference is in-app purchases: Seylo at none against TheBrain's 2. Seylo also leads on update cadence (every 5 days vs fortnightly). TheBrain's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. TheBrain sells 2 in-app purchases, starting at $17.99 per month. Seylo asks for nothing beyond the download.

TheBrain ships an update fortnightly, Seylo every 5 days. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | TheBrain | Seylo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (171 ratings)](https://appshunter.io/ios/app/thebrain-smart-notes-and-links/id835873357/reviews)** | — |
| Number of ratings | **171** | — |
| Positive reviews | 44.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 254 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TheBrain Technologies LP](https://appshunter.io/developer/579909034) | [Jakub Radziejewski](https://appshunter.io/developer/1894833636) |

## What reviewers say

### TheBrain

[App page](https://appshunter.io/ios/app/thebrain-smart-notes-and-links/id835873357)

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:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TheBrain Pro Monthly | $17.99 | per month |
| TheBrain Pro Annual | $189.99 | per year |

**What reviewers like**

- 🚀 Seamless navigation
- 🔒 Secure cloud sync
- 👍 Intuitive interface
- 🚀 Powerful features
- 👍 Excellent for knowledge management

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🐛 Buggy on iOS 9
- 💰 Expensive subscription
- 🐛 Limited functionality on mobile
- 🐛 Confusing UI and navigation

**Reported bugs**

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

**Requested features**

- Offline mode
- Improved mobile UI and UX
- Better integration with other apps
- More affordable pricing options
- Enhanced search and filtering


### Seylo

[App page](https://appshunter.io/ios/app/seylo-project-workspace/id6814973617)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TheBrain free?

TheBrain is free to download, with in-app purchases available.

### Is Seylo free?

Seylo is free to download, with no in-app purchases.

### Do TheBrain or Seylo have ads?

Neither TheBrain nor Seylo shows ads.

### Which is updated more often, TheBrain or Seylo?

TheBrain ships an update fortnightly, and Seylo every 5 days. Most recently, TheBrain was updated on November 1, 2026 and Seylo on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*