# 2sBrain vs Documia

The clearest difference is in-app purchases: Documia at none against 2sBrain's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 2sBrain sells 3 in-app purchases, starting at $3.99 per month. Documia asks for nothing beyond the download.

2sBrain ships an update weekly, Documia every 10 days. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 2sBrain | Documia |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Size | 66 MB | 42 MB |
| Requires iOS | 15.5 | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nguyen Nhu Vuong](https://appshunter.io/developer/1486864462) | [Nardi Haxhija](https://appshunter.io/developer/1761568731) |

## What reviewers say

### 2sBrain

[App page](https://appshunter.io/ios/app/2sbrainai-pdf-document-reader/id6768344372)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP Monthly | $3.99 | per month |
| VIP Yearly | $19.99 | per year |
| VIP Lifetime | $39.99 | one-time |


### Documia

[App page](https://appshunter.io/ios/app/documia-ai-document-assistant/id6791367029)

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

**In-app purchases:** none


## Frequently asked questions

### Is 2sBrain free?

2sBrain is free to download, with in-app purchases available.

### Is Documia free?

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

### Do 2sBrain or Documia have ads?

Neither 2sBrain nor Documia shows ads.

### Which is updated more often, 2sBrain or Documia?

2sBrain ships an update weekly, and Documia every 10 days. Most recently, 2sBrain was updated on October 8, 2026 and Documia on October 6, 2026.

---

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