# Lumin vs Lumeo. Your second brain

The clearest difference is in-app purchases: Lumin at none against Lumeo. Your second brain's 1. Lumeo. Your second brain's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Lumeo. Your second brain sells 1 in-app purchase, starting at $2.99 per month. Lumin asks for nothing beyond the download.

Lumin ships an update weekly, Lumeo. Your second brain every 4 days. Both last shipped on October 29, 2026.

## The numbers

| Metric | Lumin | Lumeo. Your second brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (931 ratings)](https://appshunter.io/ios/app/lumin-view-edit-share-pdf/id1367372862/reviews)** | — |
| Number of ratings | **931** | — |
| Positive reviews | 32.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 288 MB | 62 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nitrolabs Limited](https://appshunter.io/developer/1367372861) | [PIOTR RYSZARD PRUS](https://appshunter.io/developer/6804921357) |

## What reviewers say

### Lumin

[App page](https://appshunter.io/ios/app/lumin-view-edit-share-pdf/id1367372862)

Edit, share, and collaborate on PDF documents in the cloud. This app offers a suite of tools for annotating, organizing, and signing PDFs, with seamless integration for cloud storage and real-time collaboration.

**Highlights:** Seamless document management, Cloud integration and auto-save, Versatile editing and annotation tools, Document organization and conversion, Pre-designed templates, Real-time collaboration, eSignatures and form filling, Scanning to PDF

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Smooth performance
- 👍 Easy to use
- 💡 Useful annotation tools
- 🚀 Fast PDF rendering

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔒 Unreliable data sync
- 💰 Expensive subscription
- 🐛 Buggy app experience

**Reported bugs**

- Lost work and unsaved changes
- Inability to open/access files
- Frequent login issues
- Compatibility problems on mobile

**Requested features**

- Offline mode support
- Split-screen functionality
- Improved highlight/annotation tools
- Better Google Drive integration


### Lumeo. Your second brain

[App page](https://appshunter.io/ios/app/lumeo-your-second-brain/id6811937018)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Glow | $2.99 | per month |


## Frequently asked questions

### Is Lumin free?

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

### Is Lumeo. Your second brain free?

Lumeo. Your second brain is free to download, with in-app purchases available.

### Do Lumin or Lumeo. Your second brain have ads?

Lumin shows ads; Lumeo. Your second brain does not.

### Which is updated more often, Lumin or Lumeo. Your second brain?

Lumin ships an update weekly, and Lumeo. Your second brain every 4 days. Most recently, Lumin was updated on October 29, 2026 and Lumeo. Your second brain on October 29, 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.*