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Icons for universal iOS apps

App Store Icon

  • 512×512 (scaled down to 175×175 for display in the store)

Application Icon

  • 114×114 (iPhone 4)
  • 57×57 (older iPhones)
  • 72×72 (iPad)

Spotlight Search Results and Settings Icon

  • 58×58 (iPhone 4)
  • 50×50 (Spotlight results for iPad)
  • 29×29 (settings for iPad and older iPhones)

Document Icon

This is a new icon type in iOS 4. It’s used if your app creates a custom document type. The iPad uses the document icon in two different sizes.

  • 320×320 (iPad)
  • 64×64 (iPad)
  • 44×58 (iPhone 4)
  • 22×29 (older iPhones)

For every image in your app, add a second version that’s twice the size, adding @2x to the name. For a low-resolution image named image.png you would add a second file named image@2x.png. The new image will be picked up automatically by iPhone 4. Everywhere your code requests image.png, image@2x.png will be used instead.

Thanks to Neven Mrgan for the Photoshop template: http://blog.cocoia.com/2010/iphone-4-icon-psd-file/.

iPhone Icon Resize Tool: http://www.nbsoftlab.com/nbblog/?page_id=131.

There is also a web app to simplify the icon resizing for developers: http://rdicongen.appspot.com/.

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Categories: Development, Distribution, iOS

App Distribution

Requirements for a new app in iTunes Connect:

  • Your binary ready for upload with the Application Loader.
  • The price for the app.
  • The version number of the app you are adding. Numbering should follow typical software versioning conventions (for example, 1.0 or 1.0.1 or 1.1).
  • A description of the app you are adding, detailing features and functionality. Descriptions cannot be longer than 4000 bytes.
  • A Primary Category that best describes the app you are adding.
  • A Secondary Category (optional).
  • One or more keywords that describe the app you are adding. When users search the App Store, the terms they enter are matched with keywords to return more accurate results. Separate multiple keywords with commas. Keywords cannot be edited once your binary is in review and cannot be longer than 100 bytes.
  • Copyright informations with the name of the person or entity that owns the exclusive rights to the app, preceded by the year the rights were obtained (for example, “2008 Acme Inc.”).
  • A Contact Email Address where Apple can contact you if there are problems with your app. This address will not be seen by customers.
  • A Support URL that provides support for the app you are adding. This will be visible to customers on the App Store.
  • An App URL with information about the app you are adding. If provided, this will be visible to customers on the App Store. (optional)
  • Large version of the app icon that will be used on the App Store. It must be at least 72 DPI and a minimum of 512×512 pixels (it cannot be scaled up). It must be flat artwork without rounded corners.
  • At least one screenshot. iPhone and iPod touch Screenshots must be .jpeg, .jpg, .tif, .tiff, or .png file that is 960×640, 960×600, 640×960, 640×920, 480×320, 480×300, 320×480, or 320×460 pixes, at least 72 DPI, and in the RGB color space. iPad Screenshots must be .jpeg, .jpg, .tif, .tiff, or .png file that is 1024×768, 1024×748, 768×1024, or 768×1004 pixes, at least 72 DPI, and in the RGB color space.

Now you are ready to upload your app with the Application Loader and the approval process will start automatically.

Check the App Store Review Guidlines to ensure that your app will be announced! You can find them here.

If some functions of your app are only visible or available after a login you have to provide a demo access! You can provide the login data via the optional Review Notes field in iTunes Connect.

The easiest way to submit your app to the app store is to use the “Build and Archive” build option and after that to use the “Submit Application to iTunes Connect….”! in the organizer.

Categories: Distribution, iOS