# duoBooks vs ILCB Docentes

The clearest difference is in-app purchases: ILCB Docentes at none against duoBooks's 11. On price, update cadence, 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. ILCB Docentes asks for nothing beyond the download.

duoBooks ships an update every 2 weeks, ILCB Docentes every 6 days. The most recent releases landed on September 26, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | duoBooks | ILCB Docentes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (48 ratings)](https://appshunter.io/ios/app/duobooks-language-learning/id1538452253/reviews)** | — |
| Number of ratings | **48** | — |
| Positive reviews | 68.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 54 MB | 48 MB |
| Requires iOS | **15.0** | 15.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [PlainProg LLC](https://appshunter.io/developer/1538452255) | [Promotora Miraflores SAC](https://appshunter.io/developer/1661167888) |

## 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 |


### ILCB Docentes

[App page](https://appshunter.io/ios/app/ilcb-docentes/id6746056083)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is duoBooks free?

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

### Is ILCB Docentes free?

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

### Do duoBooks or ILCB Docentes have ads?

Neither duoBooks nor ILCB Docentes shows ads.

### Which is updated more often, duoBooks or ILCB Docentes?

duoBooks ships an update every 2 weeks, and ILCB Docentes every 6 days. Most recently, duoBooks was updated on September 26, 2026 and ILCB Docentes on September 12, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*