# Duet Display vs Kramer Control Agent

The clearest difference is in-app purchases: Kramer Control Agent at none against Duet Display's 6. Kramer Control Agent also leads on ads (none vs shown). Duet Display's advantage is device support (4 vs 1). On price, update cadence 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. Kramer Control Agent asks for nothing beyond the download.

Duet Display ships an update every 3 weeks, Kramer Control Agent every 6 weeks. The most recent releases landed on October 2, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Duet Display | Kramer Control Agent |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (49K ratings)](https://appshunter.io/ios/app/duet-display/id935754064/reviews)** | — |
| Number of ratings | **49K** | — |
| Positive reviews | 45.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 69 MB | 14 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod, Vision Pro** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Duet, Inc.](https://appshunter.io/developer/935754063) | [Kramer Electronics Ltd.](https://appshunter.io/developer/694685194) |

## 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


### Kramer Control Agent

[App page](https://appshunter.io/ios/app/kramer-control-agent/id6450832501)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Duet Display free?

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

### Is Kramer Control Agent free?

Kramer Control Agent is free to download, with no in-app purchases.

### Do Duet Display or Kramer Control Agent have ads?

Duet Display shows ads; Kramer Control Agent does not.

### Which is updated more often, Duet Display or Kramer Control Agent?

Duet Display ships an update every 3 weeks, and Kramer Control Agent every 6 weeks. Most recently, Duet Display was updated on October 2, 2026 and Kramer Control Agent on September 18, 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.*