# Duet Display vs shiftscreen 4X

The clearest difference is price: Duet Display at Free against shiftscreen 4X's $7.99. Duet Display also leads on rating (4.4 vs 2.2) and review sentiment (45% vs 18%). shiftscreen 4X's advantage is in-app purchases (none vs 6) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Duet Display is free to download; shiftscreen 4X costs $7.99 up front. Duet Display sells 6 in-app purchases, starting at $3.99 per month. shiftscreen 4X asks for nothing beyond the download.

Duet Display holds the better App Store score, 4.4 against 2.2. That said, the two scores are not equally well evidenced: Duet Display has 49K ratings behind it against 158, so its average is the more settled of the two. Written reviews point the same way: 45% of Duet Display's written reviews are positive against 18% of shiftscreen 4X's.

## The numbers

| Metric | Duet Display | shiftscreen 4X |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Rating | **[4.4 (49K ratings)](https://appshunter.io/ios/app/duet-display/id935754064/reviews)** | [2.2 (158 ratings)](https://appshunter.io/ios/app/shiftscreen-4x/id1573652748/reviews) |
| Number of ratings | **49K** | 158 |
| Positive reviews | **45.5% of reviews** | 17.8% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | — |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 59 MB | 5 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Duet, Inc.](https://appshunter.io/developer/935754063) | [Yannik Schrade](https://appshunter.io/developer/1498683179) |

## What reviewers say

### Duet Display

[App page](https://appshunter.io/ios/app/duet-display/id935754064)

Transform your iPad or iPhone into an advanced, lag-free extra display for your Mac or PC. Interact with your computer using touch and gestures, and unlock professional drawing capabilities with Apple Pencil support.

**Highlights:** Extra display for Mac & PC, Lag-free performance, Touch and gesture support, Apple Pencil integration, Professional drawing tools, Portable productivity

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Duet Starter (Monthly) | $3.99 | per month |
| Duet Air (Monthly) | $5.99 | per month |
| Duet Pro | $7.99 | per month |
| Duet Starter (Annual) | $39.99 | per year |
| Duet Air (Annual) | $49.99 | per year |
| Duet Pro (Annual) | $79.99 | per year |

**What reviewers like**

- 🚀 Works seamlessly as a second screen
- 👍 Useful for productivity and multitasking
- 🎨 Great for artists and designers
- 💻 Extends desktop to iPad
- ⭐ Excellent customer support

**What reviewers complain about**

- 🐛 Connectivity issues and crashes
- 🔋 High battery consumption
- 🔒 Subscription model for full functionality
- 🔍 Confusing setup process
- 💸 Expensive for the features provided

**Reported bugs**

- Incompatibility with certain software and drivers
- Laggy performance and input delays
- Unreliable connection and frequent disconnects

**Requested features**

- Improved resolution and scaling options
- Better support for older devices and Windows
- More customization and control over settings
- Wireless connectivity without subscription


### shiftscreen 4X

[App page](https://appshunter.io/ios/app/shiftscreen-4x/id1573652748)

Transform your iPad or iPhone into a second monitor for your computer. Enhance productivity by extending your workspace, utilizing built-in tools like a web browser and PDF viewer, and enjoying fullscreen external display support.

**Highlights:** External monitor support via cable or AirPlay, Fullscreen external display, Integrated web browser, PDF viewer, calculator, Mouse and trackpad support, 60 fps external display, Customizable keyboard shortcuts, Rotate and configure monitor display

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Fills the entire external screen
- 🔒 Customizable appearance
- 👍 Useful for web browsing and basic tasks
- 🚀 Smooth performance for some users

**What reviewers complain about**

- 🐛 Buggy, glitchy, and unstable
- 👎 Limited app support, can't use native iPad apps
- 👎 Slow browser performance, issues with video playback
- 👎 Confusing and unintuitive user experience
- 👎 Overpriced for the limited functionality

**Reported bugs**

- Cursor/trackpad issues and freezing
- Crashes and app instability
- Compatibility problems with certain monitors
- Inability to play videos in full screen

**Requested features**

- Better Microsoft Office integration
- Support for more apps and web services
- Improved mouse/trackpad support and controls
- Ability to resize and arrange windows
- Faster browser with extensions and bookmarks


## Frequently asked questions

### Is Duet Display free?

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

### Is shiftscreen 4X free?

shiftscreen 4X costs $7.99, with no in-app purchases.

### Which has better reviews, Duet Display or shiftscreen 4X?

Duet Display is rated higher. Duet Display averages 4.4 out of 5 from 49K ratings, while shiftscreen 4X averages 2.2 from 158 ratings.

### Do Duet Display or shiftscreen 4X have ads?

Duet Display shows ads; shiftscreen 4X does not.

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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.*