# duoBooks vs EDO (UKS)

The clearest difference is in-app purchases: EDO (UKS) at none against duoBooks's 11. EDO (UKS) also leads on update cadence (every 5 days vs every 2 weeks) and iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

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

duoBooks ships an update every 2 weeks, EDO (UKS) every 5 days. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | duoBooks | EDO (UKS) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (55 ratings)](https://appshunter.io/ios/app/duobooks-language-learning/id1538452253/reviews)** | — |
| Number of ratings | **55** | — |
| Positive reviews | 68.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 53 MB | 32 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [PlainProg LLC](https://appshunter.io/developer/1538452255) | [EDO (UZKOJE)](https://appshunter.io/developer/6809219131) |

## 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

**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 |


### EDO (UKS)

[App page](https://appshunter.io/ios/app/edo-uks/id6749434049)

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

**In-app purchases:** none


## Frequently asked questions

### Is duoBooks free?

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

### Is EDO (UKS) free?

EDO (UKS) is free to download, with no in-app purchases.

### Do duoBooks or EDO (UKS) have ads?

Neither duoBooks nor EDO (UKS) shows ads.

### Which is updated more often, duoBooks or EDO (UKS)?

duoBooks ships an update every 2 weeks, and EDO (UKS) every 5 days. Most recently, duoBooks was updated on October 13, 2026 and EDO (UKS) on October 6, 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.*