# CU e vs Naiin Reader

The clearest difference is rating: CU e at 4.2 against Naiin Reader's 2.7. CU e also leads on update cadence (monthly vs every 2 months). On price, ratings volume, 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.

CU e holds the better App Store score, 4.2 against 2.7. Both are backed by a comparable volume of ratings — 5 and 6 respectively.

CU e ships an update monthly, Naiin Reader every 2 months. The most recent releases landed on September 10, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | CU e | Naiin Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/cu-e-library/id1607050195/reviews)** | [2.7 (6 ratings)](https://appshunter.io/ios/app/naiin-reader/id6680192386/reviews) |
| Number of ratings | 5 | **6** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | Free |
| Size | 117 MB | 39 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 17+ |
| Developer | [Hytexts Interactive Limited](https://appshunter.io/developer/1289188993) | [Amarin Printing & Publishing Public Company Limited.](https://appshunter.io/developer/464708773) |

## What reviewers say

### 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


### Naiin Reader

[App page](https://appshunter.io/ios/app/naiin-reader/id6680192386)

This application allows you to read digital books from a renowned Thai bookstore. It offers features for customizing your reading experience, syncing across devices, and tracking progress. Enjoy a vast library of e-books on your smartphone, tablet, or e-reader.

**Highlights:** Store thousands of books, Customize text size, font, and themes, Take notes and bookmark pages, Sync reading progress across devices, Track reading progress percentage, Supports PDF and EPUB formats, Zoom for high-resolution images

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

**In-app purchases:** none


## Frequently asked questions

### Is CU e free?

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

### Is Naiin Reader free?

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

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

CU e is rated higher. CU e averages 4.2 out of 5 from 5 ratings, while Naiin Reader averages 2.7 from 6 ratings.

### Do CU e or Naiin Reader have ads?

Neither CU e nor Naiin Reader shows ads.

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

CU e ships an update monthly, and Naiin Reader every 2 months. Most recently, CU e was updated on September 10, 2026 and Naiin Reader on September 19, 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.*