# TwoUp Split Screen Dual Window vs Duo Viewer

The clearest difference is iOS requirement: TwoUp Split Screen Dual Window at 18.0 against Duo Viewer's 26.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. TwoUp Split Screen Dual Window sells 2 in-app purchases, starting at $6.99 per 7 days and Duo Viewer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | TwoUp Split Screen Dual Window | Duo Viewer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 4 MB | 2 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Mikalai Kuts](https://appshunter.io/developer/1757613729) | [Liangjun Song](https://appshunter.io/developer/6816411623) |

## What reviewers say

### TwoUp Split Screen Dual Window

[App page](https://appshunter.io/ios/app/twoup-split-screen-dual-window/id6802056782)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TwoUp Plus Week | $6.99 | per 7 days |
| TwoUP Plus Year | $59.99 | per year |


### Duo Viewer

[App page](https://appshunter.io/ios/app/duo-viewer/id6816411621)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Duo Viewer Pro | $6.99 | one-time |


## Frequently asked questions

### Is TwoUp Split Screen Dual Window free?

TwoUp Split Screen Dual Window is free to download, with in-app purchases available.

### Is Duo Viewer free?

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

### Do TwoUp Split Screen Dual Window or Duo Viewer have ads?

Neither TwoUp Split Screen Dual Window nor Duo Viewer 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.*