# Duet Display vs spacedesk

The clearest difference is ads: spacedesk at none against Duet Display's shown. spacedesk also leads on review sentiment (71% vs 46%) and rating (4.7 vs 4.4). Duet Display's advantage is ratings volume (49K vs 2.2K). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Duet Display sells 6 in-app purchases, starting at $3.99 per month and spacedesk sells 11 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

spacedesk holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Duet Display has 49K ratings behind it against 2.2K, so its average is the more settled of the two. Written reviews point the same way: 46% of Duet Display's written reviews are positive against 71% of spacedesk's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Duet Display | spacedesk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (49K ratings)](https://appshunter.io/ios/app/duet-display/id935754064/reviews) | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/spacedesk-usb-display-for-pc/id1069217220/reviews)** |
| Number of ratings | **49K** | 2.2K |
| Positive reviews | 45.5% of reviews | **71.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 69 MB | 17 MB |
| Requires iOS | 12.0 | **9.3** |
| Devices | **iPhone, iPad, iPod, Vision Pro** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Duet, Inc.](https://appshunter.io/developer/935754063) | [datronicsoft Technology GmbH](https://appshunter.io/developer/1069217219) |

## 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


### spacedesk

[App page](https://appshunter.io/ios/app/spacedesk-usb-display-for-pc/id1069217220)

Extend your Windows PC's desktop to another device wirelessly or via USB. Use your tablet or phone as a drawing tablet or a portable second monitor for travel and productivity.

**Highlights:** Windows desktop extension, Screen mirroring, Remote desktop viewer, Drawing tablet functionality, Wireless display monitor, USB display monitor, Remote control

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Business License: 46-50 Conn. | $9.00 | one-time |
| Business License: 41-45 Conn. | $18.00 | one-time |
| Business License: 1 connection | $19.00 | one-time |
| Business License: 36-40 Conn. | $25.00 | one-time |
| Business License: 31-35 Conn. | $35.00 | one-time |
| Business License: 26-30 Conn. | $45.00 | one-time |
| Business License: 21-25 Conn. | $50.00 | one-time |
| Business License: 16-20 Conn. | $59.00 | one-time |
| Business License: 11-15 Conn. | $60.00 | one-time |
| Business License: 6-10 Conn. | $70.00 | one-time |
| Business License: 2-5 Conn. | $79.00 | one-time |


## Frequently asked questions

### Is Duet Display free?

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

### Is spacedesk free?

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

### Which has better reviews, Duet Display or spacedesk?

spacedesk is rated higher. Duet Display averages 4.4 out of 5 from 49K ratings, while spacedesk averages 4.7 from 2.2K ratings.

### Do Duet Display or spacedesk have ads?

Duet Display shows ads; spacedesk does not.

### Which is updated more often, Duet Display or spacedesk?

Duet Display ships an update every 3 weeks, and spacedesk every 3 weeks. Most recently, Duet Display was updated on September 24, 2026 and spacedesk on September 23, 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.*