# iLib vs Duo Reader

The clearest difference is ads: iLib at none against Duo Reader's shown. iLib also leads on device support (4 vs 2) and iOS requirement (14.0 vs 17.6). Duo Reader's advantage is update cadence (every 6 days vs fortnightly). On price 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.

iLib ships an update fortnightly, Duo Reader every 6 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | iLib | Duo Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/duo-reader/id6815597778/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 6 days** |
| Size | 60 MB | 95 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Qianye (hubei Province) Education Technology Co., Ltd](https://appshunter.io/developer/6785369295) | [LeoStudio Global](https://appshunter.io/developer/1700204948) |

## What reviewers say

### iLib

[App page](https://appshunter.io/ios/app/ilib-read-listen-learn/id6785369293)

**Features:** Vision Pro support

**In-app purchases:** none


### Duo Reader

[App page](https://appshunter.io/ios/app/duo-reader/id6815597778)

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

**In-app purchases:** none


## Frequently asked questions

### Is iLib free?

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

### Is Duo Reader free?

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

### Do iLib or Duo Reader have ads?

Duo Reader shows ads; iLib does not.

### Which is updated more often, iLib or Duo Reader?

iLib ships an update fortnightly, and Duo Reader every 6 days. Most recently, iLib was updated on October 25, 2026 and Duo Reader on October 31, 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.*