---
title: NSApplicationServices
framework: bundleresources
role: symbol
role_heading: Property List Key
path: bundleresources/information-property-list/nsapplicationservices
---

# NSApplicationServices

A list of service providers and the devices that they support.

## Discussion

Discussion Use this key to define which devices DeviceDiscoveryUI can connect with. The application services’s Browses key takes an array of dictionaries, where each dictionary contains a unique identifier, a usage description string, and a list of supported operating systems. You can define more than one application service for your apps. Each service has its own identifier, and can connect to a different subset of devices. Set these in your tvOS app target’s Info tab, or in its Info.plist file. <key>NSApplicationServices</key> <dict>     <key>Browses</key>     <array>         <dict>             <key>NSApplicationServiceIdentifier</key>             <string>MyApp-Controller</string>             <key>NSApplicationServiceUsageDescription</key>             <string>You can control this app using an iOS device.</string>             <key>NSApplicationServicePlatformSupport</key>             <array>                 <string>iOS</string>                 <string>iPadOS</string>             </array>         </dict>         <dict>             <key>NSApplicationServiceIdentifier</key>             <string>MyApp-Workout</string>             <key>NSApplicationServiceUsageDescription</key>             <string>Connects to a watchOS app to read heart-rate and active calories burned from a workout session.</string>             <key>NSApplicationServicePlatformSupport</key>             <array>                 <string>watchOS</string>             </array>         </dict>     </array> </dict>   You can use the human-readable key names in Xcode’s property list editor.

In the iOS, iPadOS, or watchOS app, use the Advertises key, and give it an array of dictionaries where each dictionary lists the application service identifier for the connection types supported on this platform. <key>NSApplicationServices</key> <dict>     <key>Advertises</key>     <array>         <dict>             <key>NSApplicationServiceIdentifier</key>             <string>MyApp-Workout</string>         </dict>     </array> </dict>

You can use the human-readable key names in Xcode’s property list editor.

## Topics

### Property List Keys

- [Advertises](bundleresources/information-property-list/nsapplicationservices/advertises.md)
- [Browses](bundleresources/information-property-list/nsapplicationservices/browses.md)