# ARCOCEAN vs Nowbook知書閱聽圖書館

The clearest difference is iOS requirement: ARCOCEAN at 5.1.1 against Nowbook知書閱聽圖書館's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ARCOCEAN ships an update every 3 months, Nowbook知書閱聽圖書館 every 2 months. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | ARCOCEAN | Nowbook知書閱聽圖書館 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 301 MB | 124 MB |
| Requires iOS | **5.1.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alzzam Education Corp.](https://appshunter.io/developer/868032382) | [SUEP](https://appshunter.io/developer/660144353) |

## What reviewers say

### ARCOCEAN

[App page](https://appshunter.io/ios/app/arcocean-arc-ocean/id1089840002)

**Features:** macOS Compatibility

**In-app purchases:** none


### Nowbook知書閱聽圖書館

[App page](https://appshunter.io/ios/app/nowbook/id6443480831)

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

**In-app purchases:** none


## Frequently asked questions

### Is ARCOCEAN free?

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

### Is Nowbook知書閱聽圖書館 free?

Nowbook知書閱聽圖書館 is free to download, with no in-app purchases.

### Do ARCOCEAN or Nowbook知書閱聽圖書館 have ads?

Neither ARCOCEAN nor Nowbook知書閱聽圖書館 shows ads.

### Which is updated more often, ARCOCEAN or Nowbook知書閱聽圖書館?

ARCOCEAN ships an update every 3 months, and Nowbook知書閱聽圖書館 every 2 months. Most recently, ARCOCEAN was updated on October 26, 2026 and Nowbook知書閱聽圖書館 on November 3, 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.*