# Duoreader vs duoBooks

The clearest difference is rating: duoBooks at 4.7 against Duoreader's 4.1. duoBooks also leads on update cadence (every 2 weeks vs every 2 months). Duoreader's advantage is in-app purchases (none vs 11). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. duoBooks sells 11 in-app purchases, starting at $2.99 per month. Duoreader asks for nothing beyond the download.

duoBooks holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 21 and 57 respectively. Written reviews point the same way: 63% of Duoreader's written reviews are positive against 68% of duoBooks's.

Duoreader ships an update every 2 months, duoBooks every 2 weeks. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Duoreader | duoBooks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (21 ratings)](https://appshunter.io/ios/app/duoreader-bilingual-reading/id1527845152/reviews) | **[4.7 (57 ratings)](https://appshunter.io/ios/app/duobooks-language-learning/id1538452253/reviews)** |
| Number of ratings | 21 | **57** |
| Positive reviews | 62.5% of reviews | **68.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 64 MB | 53 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Xing Chen](https://appshunter.io/developer/990526001) | [PlainProg LLC](https://appshunter.io/developer/1538452255) |

## What reviewers say

### Duoreader

[App page](https://appshunter.io/ios/app/duoreader-bilingual-reading/id1527845152)

Read books and articles in two languages simultaneously, with sentence-by-sentence translations and audio support. Improve language skills naturally while enjoying literature and news. Supports custom imports and AI-powered explanations.

**Highlights:** Sentence-by-sentence bilingual translation, AI-powered dictionary, Advanced text-to-speech with multiple voices, Import custom ePUB and PDF files, Wide range of classic and modern texts, Supports multiple languages

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

**In-app purchases:** none


### duoBooks

[App page](https://appshunter.io/ios/app/duobooks-language-learning/id1538452253)

Read any book in any language with instant translation and detailed word explanations. Build your vocabulary with a personal dictionary and spaced repetition tools. Improve pronunciation with audio voiceovers and master new languages through immersive bilingual reading.

**Highlights:** Instant translation of any book, Personalized vocabulary dictionary, Spaced repetition for memorization, Audio voiceovers for pronunciation, Bilingual parallel text reading, EPUB reader for custom files

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Plan | $2.99 | per month |
| Full Plan | $6.99 | per month |
| Full Plan | $17.99 | per year |
| 6 Month Full Plan | $19.99 | per 6 months |
| Full Yearly Plan | $29.99 | per year |
| War and Peace | $0.99 | one-time |
| Silver Blaze | $0.99 | one-time |
| On The River | $0.99 | one-time |
| Clochette | $0.99 | one-time |
| The Fishing Hole | $0.99 | one-time |
| Alice in Wonderland | $0.99 | one-time |


## Frequently asked questions

### Is Duoreader free?

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

### Is duoBooks free?

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

### Which has better reviews, Duoreader or duoBooks?

duoBooks is rated higher. Duoreader averages 4.1 out of 5 from 21 ratings, while duoBooks averages 4.7 from 57 ratings.

### Do Duoreader or duoBooks have ads?

Neither Duoreader nor duoBooks shows ads.

### Which is updated more often, Duoreader or duoBooks?

Duoreader ships an update every 2 months, and duoBooks every 2 weeks. Most recently, Duoreader was updated on October 24, 2026 and duoBooks on October 29, 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.*