How to Check Requirements for an iPad App
You have visited the iTunes store and found an app for your iPad that interests you. Last but not least, check the requirements and device support information for your app.
As an example, the figure shows the detail screen for SketchBook Pro, a nifty drawing and painting app for your iPad. If you look below the rating (Rated 4+), you can see the requirements for this particular app.
Because it says Compatible with iPad. Requires iOS 3.2 or later and doesn’t mention the iPhone or iPod touch, this app falls into the category of apps made exclusively for the iPad. Another clue that it falls into this category is that it says iPad Screenshots above the two pictures shown in the figure.
If the app belonged to the categories of apps made to work properly on an iPad, iPhone, or iPod touch; or apps made for the iPhone or iPod touch; it would say Compatible with iPhone, iPod touch, and iPad rather than Compatible with iPad.
Now you’re probably wondering how you can tell whether an app falls into the second or third category. The first clue is the little gray plus sign next to the price, which appears for many of the apps shown in this figure.
Apps with this symbol are universal and run at full resolution on iPhones and iPads. Another clue is to look at the screen shots. If you see two tabs — iPhone and iPad — after Screenshots, the app will work at the full resolution of an iPad, iPhone, or iPod touch.
Conversely, if you only see one tab that says iPhone Screenshots, the app will run at iPhone/iPod touch resolution on your iPad.
One way to ensure that you look only for apps that take advantage of your iPad’s big screen is to click the iPad tab on the front page of the App Store (shown in this figure).
All the apps displayed under the iPad tab are of the first or second type and are designed to take advantage of your iPad's larger screen.