# DuoBook.co vs WordVia

The clearest difference is update cadence: DuoBook.co at every 5 days against WordVia's every 11 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. DuoBook.co sells 1 in-app purchase, starting at $5.99 per month and WordVia sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

DuoBook.co ships an update every 5 days, WordVia every 11 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | DuoBook.co | WordVia |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 11 days |
| Size | 34 MB | 109 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Emin Onur Karakaslar](https://appshunter.io/developer/1891281160) | [Soghomon Chilingaryan](https://appshunter.io/developer/1797792911) |

## What reviewers say

### DuoBook.co

[App page](https://appshunter.io/ios/app/duobookco/id6762019079)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DuoBook Pro | $5.99 | per month |


### WordVia

[App page](https://appshunter.io/ios/app/wordvia-learn-by-reading/id6764081609)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WordVia Premium Monthly | $5.99 | per month |
| WordVia Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is DuoBook.co free?

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

### Is WordVia free?

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

### Do DuoBook.co or WordVia have ads?

Neither DuoBook.co nor WordVia shows ads.

### Which is updated more often, DuoBook.co or WordVia?

DuoBook.co ships an update every 5 days, and WordVia every 11 days. Most recently, DuoBook.co was updated on October 31, 2026 and WordVia on November 5, 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.*