Developed by former Apple engineers, the Duet Display app allows you to use your iPad or iPhone as an extra display for your Mac. The setup requires both an iOS app, which typically runs for $15.99 (after a $9.99 introductory price for a short time) and a Mac companion app that is free, but today the iOS side of things has dropped to its lowest price ever: $7.99.

Head below for a closer look in the intro video and more details:

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The developers claim it is “the first high performance” completely lag-free solution, although that is likely because it doesn’t use WiFi or Bluetooth to make it all happen like many of its competitors. After downloading both apps, you simply connect your iPad or iPhone up with your Mac using a standard Lightning or 30-pin cable, and it’s ready to go.

Be sure to stay locked to Toys for all the best iOS price drops everyday, and you’ll find a complete review of the app over on 9to5Mac:

I love it. Used on a recent Mac, it’s as good as a conventional monitor (albeit a small one). Those who use chat apps for work will find it especially useful, enabling you to keep an eye on the chat while still retaining full use of your Mac screen for your actual work.

More from the developers:

Duet Display allows you to use your iPad or iPhone as an extra display. Developed by a team of ex-Apple engineers, duet is the first high performance solution that has zero lag.

Work more effectively with duet. An additional display can increase productivity for engineers, musicians, designers, and artists by up to 48%.

To setup, download and open duet on your Mac (for free) and on iOS. Connect your iDevice to your Mac using a lightning or 30 pin cable. Done.

No need to worry about firewall settings, Wi-Fi speed or your 802.11n network. Duet is secure, simple, and allows you to use your iOS and OS X devices in harmony.

And feel free to use your touch screen for interaction with your new display.

Check out our demo video: http://youtu.be/mVYimOiEya8

Features:

-Lag Free

-Plug and Play Setup

-60 Frames Per Second

-Retina Display (optional)

-Secure Wired Connection

-Touch Enabled

-Same Day Support

Duet In The News

TechCrunch – “Feels Like Magic”

Time – “Getting Work Done Faster and More Efficiently”

The Guardian – “Lag-free”

Forbes – “The simple thing to note is this…Duet Display works.”

The Verge – “Glorious Fluidity”

Lifehacker – “It’s fast, easy to use, and works great”

Business Insider – “Zero lag and true retina resolution”

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