# ARCOCEAN vs 知書Nowbook

The clearest difference is in-app purchases: ARCOCEAN at none against 知書Nowbook's 8. ARCOCEAN also leads on iOS requirement (5.1.1 vs 11.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 知書Nowbook sells 8 one-off in-app purchases. ARCOCEAN asks for nothing beyond the download.

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

## The numbers

| Metric | ARCOCEAN | 知書Nowbook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (3 ratings)](https://appshunter.io/ios/app/nowbook/id1446373183/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 301 MB | 45 MB |
| Requires iOS | **5.1.1** | 11.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, 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


### 知書Nowbook

[App page](https://appshunter.io/ios/app/nowbook/id1446373183)

This platform offers a comprehensive reading experience, combining e-books, audiobooks, courses, and video content. It features a vast collection of Chinese literature and aims to be a leading Cantonese audiobook resource.

**Highlights:** Extensive e-book library, Cantonese audiobook collection, Multimedia courses, Author interviews and video content, Daily content updates, Hong Kong and international Chinese literature

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 8知書幣 | $0.99 | one-time |
| 38知書幣 | $4.99 | one-time |
| 58知書幣 | $7.99 | one-time |
| 80知書幣 | $9.99 | one-time |
| 193知書幣 | $23.99 | one-time |
| 248知書幣 | $24.99 | one-time |
| 298知書幣 | $36.99 | one-time |
| 403知書幣 | $48.99 | one-time |


## Frequently asked questions

### Is ARCOCEAN free?

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

### Is 知書Nowbook free?

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

### Do ARCOCEAN or 知書Nowbook have ads?

Neither ARCOCEAN nor 知書Nowbook shows ads.

### Which is updated more often, ARCOCEAN or 知書Nowbook?

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