BothFiftyThree’s Surface Pressuretechnology coming to its Pencil stylus this Fall andAdobe’s new Ink stylusoffer a glimpse of iOS 8′s variable touch sizing technology that allows these accessories to vary the pressure, thickness and width of lines you create.
Say you’re an artist in a desperate need of a drawing tablet. Sure, you could pick up a dedicated Mac drawing tablet from the likes of Wacom, Intuos and others.

But why spend hundreds of dollars on a dedicated drawing surface when you already have one in your home – your iPad? All you need to turn your beloved Apple tablet into a pressure-sensitive drawing tablet for the Mac is Air Stylus, a $19.99 app from Avatron…
Air Stylus lets you use your iPad as a pressure-sensitive, wireless drawing surface for your favorite graphics software on your computer.

After installing both the iPad app and the free Air Display host Mac software (both your Mac and the iPad must be on the same Wi-Fi network), click the Air Display menu on the Mac to connect to your iPad.
Next, simply launch your favorite graphics app on the Mac, drag its window to the iPad and you can start drawing or painting on it.
Here it is in action.
The app supports more than 30 popular graphics and design Mac apps, such as Pixelmator, Adobe Photoshop or just about any app compatible with pressure-sensitive pens such as the Wacom Intuos Creative Stylus, Adonit Jot Touch 4 and Ten One Designs Pogo Connect.
Key highlights:
Buy Air Stylus for $19.99 in the App Store.
The iPad-only app requires iOS 7.0 or later. The OS X client requires an Intel-based Mac running OS X 10.7 and above.