# duoBooks vs Language Islands

The clearest difference is iOS requirement: duoBooks at 15.0 against Language Islands's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. duoBooks sells 4 in-app purchases, starting at $8.99 per month and Language Islands sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | duoBooks | Language Islands |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (61 ratings)](https://appshunter.io/ios/app/duobooks-language-learning/id1538452253/reviews)** | — |
| Number of ratings | **61** | — |
| Positive reviews | 68.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 55 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [PlainProg LLC](https://appshunter.io/developer/1538452255) | [CHRISTOPHER ROBERT MURRAY](https://appshunter.io/developer/6806863192) |

## What reviewers say

### 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, iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Plan | $8.99 | per month |
| Full Yearly Plan | $19.99 | per year |
| 6 Month Full Plan | $24.99 | per 6 months |
| Full Yearly Plan | $39.99 | per year |


### Language Islands

[App page](https://appshunter.io/ios/app/language-islands/id6806863190)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Japanese islands | $2.49 | one-time |


## Frequently asked questions

### Is duoBooks free?

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

### Is Language Islands free?

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

### Do duoBooks or Language Islands have ads?

Neither duoBooks nor Language Islands shows ads.

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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.*