Detect if you're currently running a development version or an App Store/Ad Hoc version (Re-implemented in Swift)

ProvisioningProfile.swift

public struct ProvisioningProfile {
  public static let sharedInstance = ProvisioningProfile()
  #if (arch(i386) || arch(x86_64)) && os(iOS)
  public let isDevelopment = true
  #else
  public let isDevelopment: Bool
  private init() {
    guard let provision = NSBundle.mainBundle().pathForResource("embedded", ofType: "mobileprovision"),
      let data = NSData(contentsOfFile: provision) else {
        isDevelopment = false
        return
    }
    let bytes = Array<UInt8>(UnsafeBufferPointer(start: UnsafePointer<UInt8>(data.bytes), count: data.length))
    let profile = bytes
      .map { UnicodeScalar($0) }
      .filter { $0.isASCII() }
      .reduce("") { "\($0)\($1)" }
      .componentsSeparatedByCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet())
      .joinWithSeparator("")
    isDevelopment = profile.rangeOfString("<key>get-task-allow</key><true/>")?.count > 0
  }
  #endif
}