# Duet Display vs Luna Display

The clearest difference is in-app purchases: Luna Display at none against Duet Display's 6. Luna Display also leads on ads (none vs shown) and review sentiment (76% vs 46%). Duet Display's advantage is ratings volume (49K vs 4K) and update cadence (every 3 weeks vs every 2 months). On price and iOS requirement there is nothing between them.

Both are free to download. Duet Display sells 6 in-app purchases, starting at $3.99 per month. Luna Display asks for nothing beyond the download.

Luna Display holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Duet Display has 49K ratings behind it against 4K, 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 76% of Luna Display's.

Duet Display ships an update every 3 weeks, Luna Display every 2 months. The most recent releases landed on September 26, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Duet Display | Luna Display |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (49K ratings)](https://appshunter.io/ios/app/duet-display/id935754064/reviews) | **[4.8 (4K ratings)](https://appshunter.io/ios/app/luna-display/id1250259715/reviews)** |
| Number of ratings | **49K** | 4K |
| Positive reviews | 45.5% of reviews | **76.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 69 MB | 67 MB |
| Requires iOS | **12.0** | 12.1 |
| Devices | **iPhone, iPad, iPod, Vision Pro** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Duet, Inc.](https://appshunter.io/developer/935754063) | [Astro HQ](https://appshunter.io/developer/934510729) |

## 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


### Luna Display

[App page](https://appshunter.io/ios/app/luna-display/id1250259715)

Transform your iPad into a wireless second display for your Mac or PC. This hardware-enabled solution offers low latency and high image quality, supporting touch gestures and Apple Pencil for a seamless extension of your computer's capabilities.

**Highlights:** Wireless second display for Mac/PC, Supports touch and Apple Pencil, Low latency performance, Mix and match devices (PC-to-iPad, Mac-to-iPad), Headless mode for Mac mini/Pro, Connect via Wi-Fi or USB

**In-app purchases:** none

**What reviewers like**

- 🚀 Reliable even when Sidecar is not
- 🚀 Absolutely magic in every respect
- 🚀 Headless Mac
- 👍 Great software
- 🚀 Really Cool Way to Use IPad with Windows or Mac

**What reviewers complain about**

- 🔑 Keyboard Input on screen…
- 🐛 Constantly begging for a rating
- 🔑 Nice product if connected by wire
- 🐛 Cannot right click with pencil
- 🔑 No full screen on iPadOS 18.2 external displays.

**Reported bugs**

- No full screen on iPadOS 18.2 external displays.
- Does not work anymore
- Cannot pair with windows PC

**Requested features**

- Portrait mode
- Locked cursor support
- Magic Keyboard Support
- Automatic login in headless mode


## Frequently asked questions

### Is Duet Display free?

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

### Is Luna Display free?

Luna Display is free to download, with no in-app purchases.

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

Luna Display is rated higher. Duet Display averages 4.4 out of 5 from 49K ratings, while Luna Display averages 4.8 from 4K ratings.

### Do Duet Display or Luna Display have ads?

Duet Display shows ads; Luna Display does not.

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

Duet Display ships an update every 3 weeks, and Luna Display every 2 months. Most recently, Duet Display was updated on September 26, 2026 and Luna Display on September 22, 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.*