# 은하서가 vs boook

The clearest difference is in-app purchases: 은하서가 at none against boook's 2. 은하서가 also leads on ads (none vs shown). boook's advantage is update cadence (every 2 days vs fortnightly) and iOS requirement (15.5 vs 17.0). On price and device support there is nothing between them.

Both are free to download. boook sells 2 in-app purchases, starting at $2.49 per month. 은하서가 asks for nothing beyond the download.

은하서가 ships an update fortnightly, boook every 2 days. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 은하서가 | boook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 498 MB | 86 MB |
| Requires iOS | 17.0 | **15.5** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MINGYU KANG](https://appshunter.io/developer/1895678699) | [Ppom Studio](https://appshunter.io/developer/6785508462) |

## What reviewers say

### 은하서가

[App page](https://appshunter.io/ios/app/id6764192309)

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

**In-app purchases:** none


### boook

[App page](https://appshunter.io/ios/app/boook/id6785508460)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.49 | per month |
| Premium Yearly | $24.99 | per year |


## Frequently asked questions

### Is 은하서가 free?

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

### Is boook free?

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

### Do 은하서가 or boook have ads?

boook shows ads; 은하서가 does not.

### Which is updated more often, 은하서가 or boook?

은하서가 ships an update fortnightly, and boook every 2 days. Most recently, 은하서가 was updated on October 14, 2026 and boook on October 24, 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.*