# TheBrain vs Diagrams

The clearest difference is price: TheBrain at Free against Diagrams's $4.99. TheBrain also leads on iOS requirement (15.0 vs 26.0). Diagrams's advantage is in-app purchases (none vs 2) and update cadence (every 5 days vs fortnightly). On ads and device support there is nothing between them.

TheBrain is free to download; Diagrams costs $4.99 up front. TheBrain sells 2 in-app purchases, starting at $17.99 per month. Diagrams asks for nothing beyond the download.

TheBrain ships an update fortnightly, Diagrams every 5 days. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | TheBrain | Diagrams |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| 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 | 4 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [TheBrain Technologies LP](https://appshunter.io/developer/579909034) | [Elsa Mourato](https://appshunter.io/developer/534256803) |

## 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


### Diagrams

[App page](https://appshunter.io/ios/app/diagrams-visualize-your-ideas/id6792603116)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TheBrain free?

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

### Is Diagrams free?

Diagrams costs $4.99, with no in-app purchases.

### Do TheBrain or Diagrams have ads?

Neither TheBrain nor Diagrams shows ads.

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

TheBrain ships an update fortnightly, and Diagrams every 5 days. Most recently, TheBrain was updated on November 1, 2026 and Diagrams on October 31, 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.*