# Tailor Book vs 2sBrain

The clearest difference is in-app purchases: Tailor Book at none against 2sBrain's 3. Tailor Book also leads on iOS requirement (12.0 vs 15.5). 2sBrain's advantage is ads (none vs shown). On price, update cadence 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. Tailor Book asks for nothing beyond the download.

Tailor Book ships an update fortnightly, 2sBrain weekly. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Tailor Book | 2sBrain |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Size | 82 MB | 66 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TWINSPIDER (SMC-PRIVATE) LIMITED](https://appshunter.io/developer/1583928547) | [Nguyen Nhu Vuong](https://appshunter.io/developer/1486864462) |

## What reviewers say

### Tailor Book

[App page](https://appshunter.io/ios/app/tailor-book/id6720752754)

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Tailor Book free?

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

### Is 2sBrain free?

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

### Do Tailor Book or 2sBrain have ads?

Tailor Book shows ads; 2sBrain does not.

### Which is updated more often, Tailor Book or 2sBrain?

Tailor Book ships an update fortnightly, and 2sBrain weekly. Most recently, Tailor Book was updated on September 30, 2026 and 2sBrain on October 8, 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.*