# Naiin vs CU e

The clearest difference is rating: CU e at 4.2 against Naiin's 1.3. CU e also leads on in-app purchases (none vs 16) and ads (none vs shown). Naiin's advantage is update cadence (every 2 weeks vs monthly) and iOS requirement (13.6 vs 15.6). On price, ratings volume and device support there is nothing between them.

Both are free to download. Naiin sells 16 one-off in-app purchases. CU e asks for nothing beyond the download.

CU e holds the better App Store score, 4.2 against 1.3. Both are backed by a comparable volume of ratings — 3 and 5 respectively.

Naiin ships an update every 2 weeks, CU e monthly. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Naiin | CU e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.3 (3 ratings)](https://appshunter.io/ios/app/naiin/id1558327029/reviews) | **[4.2 (5 ratings)](https://appshunter.io/ios/app/cu-e-library/id1607050195/reviews)** |
| Number of ratings | 3 | **5** |
| Positive reviews | 10.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | **Free** |
| Size | 133 MB | 117 MB |
| Requires iOS | **13.6** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 9+ |
| Developer | [Amarin Printing & Publishing Public Company Limited.](https://appshunter.io/developer/464708773) | [Hytexts Interactive Limited](https://appshunter.io/developer/1289188993) |

## What reviewers say

### Naiin

[App page](https://appshunter.io/ios/app/naiin/id1558327029)

Access a vast digital library of eBooks, eMagazines, and audiobooks from leading publishers. This app transforms your device into an advanced reader, offering a fun and powerful way to enjoy your favorite titles anytime, anywhere. Discover new best-sellers and manage your library with ease.

**Highlights:** Vast selection of eBooks and eMagazines, Audiobook access, Download digital editions, Advanced eBook reader, Content categorized by genre, Add notes and drawings, Archive purchased content

**Features:** Vision Pro support

**In-app purchases (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| หนังสือราคาศูนย์จุดเก้า | $0.99 | one-time |
| หนังสือราคาสองเหรียญ | $1.99 | one-time |
| หนังสือราคาสองจุดเก้า | $2.99 | one-time |
| หนังสือราคาสี่เหรียญ | $3.99 | one-time |
| หนังสือราคาห้าเหรียญ | $4.99 | one-time |
| หนังสือราคาห้าจุดเก้า | $5.99 | one-time |
| หนังสือราคาหกจุดเก้าเก้าเหรียญ | $6.99 | one-time |
| หนังสือราคาเจ็ดจุดเก้าเก้า | $7.99 | one-time |
| US รักของเรา | $8.99 | one-time |
| หนังสือราคาแปดจุดเก้า | $8.99 | one-time |
| หนังสือราคาสิบเหรียญ | $9.99 | one-time |
| หนังสือราคาสิบเอ็ดเหรียญ | $10.99 | one-time |
| Blank : เติมคำว่ารักลงในช่องว่ | $10.99 | one-time |
| หนังสือสิบเอ็ดจุดเก้าเหรียญ | $11.99 | one-time |
| หนังสือราคาสิบสามเหรียญ | $12.99 | one-time |
| หนังสือราคาสิบสี่เหรียญ | $13.99 | one-time |


### CU e

[App page](https://appshunter.io/ios/app/cu-e-library/id1607050195)

Access a vast collection of ebooks from leading publishers through this online library application. Borrow, reserve, and read titles offline with customizable reading modes and font adjustments for a comfortable experience. Sync your progress across devices and take notes directly within the app.

**Highlights:** Access ebooks from leading publishers, Borrow and reserve ebooks, Offline reading support, Customizable text size and font, Cross-device reading sync, Multiple reading modes, Note-taking and bookmarking

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

**In-app purchases:** none


## Frequently asked questions

### Is Naiin free?

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

### Is CU e free?

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

### Which has better reviews, Naiin or CU e?

CU e is rated higher. Naiin averages 1.3 out of 5 from 3 ratings, while CU e averages 4.2 from 5 ratings.

### Do Naiin or CU e have ads?

Naiin shows ads; CU e does not.

### Which is updated more often, Naiin or CU e?

Naiin ships an update every 2 weeks, and CU e monthly. Most recently, Naiin was updated on September 23, 2026 and CU e on September 10, 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.*