# Side Brain vs Seen | Web

The clearest difference is ads: Side Brain at none against Seen | Web's shown. Side Brain also leads on update cadence (every 4 days vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Side Brain sells 3 in-app purchases, starting at $2.99 per 7 days and Seen | Web sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Side Brain ships an update every 4 days, Seen | Web fortnightly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Side Brain | Seen | Web |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/seen-web/id6770228206/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | — | Free with in-app purchases |
| Size | 6 MB | 13 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Petr Nezval](https://appshunter.io/developer/1870515085) | [Paran](https://appshunter.io/developer/1698510581) |

## What reviewers say

### Side Brain

[App page](https://appshunter.io/ios/app/side-brain-read-later-and-ai/id6758042214)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Monthly Premium | $7.99 | per month |
| Yearly Premium | $39.99 | per year |


### Seen | Web

[App page](https://appshunter.io/ios/app/seen-web/id6770228206)

Save web pages from Safari and find them quickly later. Build a private web memory with summaries and tags. Syncs privately via iCloud without requiring sign-up.

**Highlights:** Save web pages from Safari, Fast page retrieval, View summaries and tags, Private iCloud sync, No sign-up required, Organize research links

**Features:** Safari Extension, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Seen Pro | $0.99 | per month |
| Seen Pro | $3.99 | one-time |


## Frequently asked questions

### Is Side Brain free?

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

### Is Seen | Web free?

Seen | Web is free to download, with in-app purchases available.

### Do Side Brain or Seen | Web have ads?

Seen | Web shows ads; Side Brain does not.

### Which is updated more often, Side Brain or Seen | Web?

Side Brain ships an update every 4 days, and Seen | Web fortnightly. Most recently, Side Brain was updated on November 5, 2026 and Seen | Web 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.*