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  "framework" : "Foundation",
  "identifier" : "/documentation/Foundation/foundation-framework-version-numbers",
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  "title" : "Foundation Framework Version Numbers"
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# Foundation Framework Version Numbers

Recognize the constants for comparing the current running version of Foundation against known OS version numbers.

## Topics

### Current Version

[`NSFoundationVersionNumber`](/documentation/Foundation/NSFoundationVersionNumber)

The version of the Foundation framework in the current environment.

### macOS Version Numbers

[`NSFoundationVersionNumber10_0`](/documentation/Foundation/NSFoundationVersionNumber10_0)

Foundation version released in macOS 10.0.

[`NSFoundationVersionNumber10_1`](/documentation/Foundation/NSFoundationVersionNumber10_1)

Foundation version released in macOS 10.1.

[`NSFoundationVersionNumber10_1_1`](/documentation/Foundation/NSFoundationVersionNumber10_1_1)

Foundation version released in macOS 10.1.1.

[`NSFoundationVersionNumber10_1_2`](/documentation/Foundation/NSFoundationVersionNumber10_1_2)

Foundation version released in macOS 10.1.2.

[`NSFoundationVersionNumber10_1_3`](/documentation/Foundation/NSFoundationVersionNumber10_1_3)

Foundation version released in macOS 10.1.3.

[`NSFoundationVersionNumber10_1_4`](/documentation/Foundation/NSFoundationVersionNumber10_1_4)

Foundation version released in macOS 10.1.4.

[`NSFoundationVersionNumber10_2`](/documentation/Foundation/NSFoundationVersionNumber10_2)

Foundation version released in macOS 10.2.

[`NSFoundationVersionNumber10_2_1`](/documentation/Foundation/NSFoundationVersionNumber10_2_1)

Foundation version released in macOS 10.2.1.

[`NSFoundationVersionNumber10_2_2`](/documentation/Foundation/NSFoundationVersionNumber10_2_2)

Foundation version released in macOS 10.2.2.

[`NSFoundationVersionNumber10_2_3`](/documentation/Foundation/NSFoundationVersionNumber10_2_3)

Foundation version released in macOS 10.2.3.

[`NSFoundationVersionNumber10_2_4`](/documentation/Foundation/NSFoundationVersionNumber10_2_4)

Foundation version released in macOS 10.2.4.

[`NSFoundationVersionNumber10_2_5`](/documentation/Foundation/NSFoundationVersionNumber10_2_5)

Foundation version released in macOS 10.2.5.

[`NSFoundationVersionNumber10_2_6`](/documentation/Foundation/NSFoundationVersionNumber10_2_6)

Foundation version released in macOS version 10.2.6.

[`NSFoundationVersionNumber10_2_7`](/documentation/Foundation/NSFoundationVersionNumber10_2_7)

Foundation version released in macOS 10.2.7.

[`NSFoundationVersionNumber10_2_8`](/documentation/Foundation/NSFoundationVersionNumber10_2_8)

Foundation version released in macOS 10.2.8.

[`NSFoundationVersionNumber10_3`](/documentation/Foundation/NSFoundationVersionNumber10_3)

Foundation version released in macOS 10.3.

[`NSFoundationVersionNumber10_3_1`](/documentation/Foundation/NSFoundationVersionNumber10_3_1)

Foundation version released in macOS 10.3.1.

[`NSFoundationVersionNumber10_3_2`](/documentation/Foundation/NSFoundationVersionNumber10_3_2)

Foundation version released in macOS 10.3.2.

[`NSFoundationVersionNumber10_3_3`](/documentation/Foundation/NSFoundationVersionNumber10_3_3)

Foundation version released in macOS 10.3.3.

[`NSFoundationVersionNumber10_3_4`](/documentation/Foundation/NSFoundationVersionNumber10_3_4)

Foundation version released in macOS 10.3.4.

[`NSFoundationVersionNumber10_3_5`](/documentation/Foundation/NSFoundationVersionNumber10_3_5)

Foundation version released in macOS 10.3.5.

[`NSFoundationVersionNumber10_3_6`](/documentation/Foundation/NSFoundationVersionNumber10_3_6)

Foundation version released in macOS 10.3.6.

[`NSFoundationVersionNumber10_3_7`](/documentation/Foundation/NSFoundationVersionNumber10_3_7)

Foundation version released in macOS 10.3.7.

[`NSFoundationVersionNumber10_3_8`](/documentation/Foundation/NSFoundationVersionNumber10_3_8)

Foundation version released in macOS 10.3.8.

[`NSFoundationVersionNumber10_3_9`](/documentation/Foundation/NSFoundationVersionNumber10_3_9)

Foundation version released in macOS 10.3.9.

[`NSFoundationVersionNumber10_4`](/documentation/Foundation/NSFoundationVersionNumber10_4)

Foundation version released in macOS 10.4.

[`NSFoundationVersionNumber10_4_1`](/documentation/Foundation/NSFoundationVersionNumber10_4_1)

Foundation version released in macOS 10.4.1.

[`NSFoundationVersionNumber10_4_2`](/documentation/Foundation/NSFoundationVersionNumber10_4_2)

Foundation version released in macOS 10.4.2.

[`NSFoundationVersionNumber10_4_3`](/documentation/Foundation/NSFoundationVersionNumber10_4_3)

Foundation version released in macOS version 10.4.3.

[`NSFoundationVersionNumber10_4_4_Intel`](/documentation/Foundation/NSFoundationVersionNumber10_4_4_Intel)

Foundation version released in macOS version 10.4.4 for Intel-based Mac computers.

[`NSFoundationVersionNumber10_4_4_PowerPC`](/documentation/Foundation/NSFoundationVersionNumber10_4_4_PowerPC)

Foundation version released in macOS 10.4.4 for PowerPC-based Mac computers.

[`NSFoundationVersionNumber10_4_5`](/documentation/Foundation/NSFoundationVersionNumber10_4_5)

Foundation version released in macOS version 10.4.5.

[`NSFoundationVersionNumber10_4_6`](/documentation/Foundation/NSFoundationVersionNumber10_4_6)

Foundation version released in macOS 10.4.6.

[`NSFoundationVersionNumber10_4_7`](/documentation/Foundation/NSFoundationVersionNumber10_4_7)

Foundation version released in macOS 10.4.7.

[`NSFoundationVersionNumber10_4_8`](/documentation/Foundation/NSFoundationVersionNumber10_4_8)

Foundation version released in macOS 10.4.8.

[`NSFoundationVersionNumber10_4_9`](/documentation/Foundation/NSFoundationVersionNumber10_4_9)

Foundation version released in macOS 10.4.9.

[`NSFoundationVersionNumber10_4_10`](/documentation/Foundation/NSFoundationVersionNumber10_4_10)

Foundation version released in macOS 10.4.10.

[`NSFoundationVersionNumber10_4_11`](/documentation/Foundation/NSFoundationVersionNumber10_4_11)

Foundation version released in macOS 10.4.11.

[`NSFoundationVersionNumber10_5`](/documentation/Foundation/NSFoundationVersionNumber10_5)

Foundation version released in macOS 10.5.0.

[`NSFoundationVersionNumber10_5_1`](/documentation/Foundation/NSFoundationVersionNumber10_5_1)

Foundation version released in macOS 10.5.1.

[`NSFoundationVersionNumber10_5_2`](/documentation/Foundation/NSFoundationVersionNumber10_5_2)

Foundation version released in macOS 10.5.2.

[`NSFoundationVersionNumber10_5_3`](/documentation/Foundation/NSFoundationVersionNumber10_5_3)

Foundation version released in macOS 10.5.3.

[`NSFoundationVersionNumber10_5_4`](/documentation/Foundation/NSFoundationVersionNumber10_5_4)

Foundation version released in macOS 10.5.4.

[`NSFoundationVersionNumber10_5_5`](/documentation/Foundation/NSFoundationVersionNumber10_5_5)

Foundation version released in macOS 10.5.5.

[`NSFoundationVersionNumber10_5_6`](/documentation/Foundation/NSFoundationVersionNumber10_5_6)

Foundation version released in macOS 10.5.6.

[`NSFoundationVersionNumber10_5_7`](/documentation/Foundation/NSFoundationVersionNumber10_5_7)

Foundation version released in macOS 10.5.7.

[`NSFoundationVersionNumber10_5_8`](/documentation/Foundation/NSFoundationVersionNumber10_5_8)

Foundation version released in macOS 10.5.8.

[`NSFoundationVersionNumber10_6`](/documentation/Foundation/NSFoundationVersionNumber10_6)

Foundation version released in macOS 10.6.

[`NSFoundationVersionNumber10_6_1`](/documentation/Foundation/NSFoundationVersionNumber10_6_1)

Foundation version released in macOS 10.6.1.

[`NSFoundationVersionNumber10_6_2`](/documentation/Foundation/NSFoundationVersionNumber10_6_2)

Foundation version released in macOS 10.6.2.

[`NSFoundationVersionNumber10_6_3`](/documentation/Foundation/NSFoundationVersionNumber10_6_3)

Foundation version released in macOS 10.6.3.

[`NSFoundationVersionNumber10_6_4`](/documentation/Foundation/NSFoundationVersionNumber10_6_4)

Foundation version released in macOS 10.6.4.

[`NSFoundationVersionNumber10_6_5`](/documentation/Foundation/NSFoundationVersionNumber10_6_5)

Foundation version released in macOS 10.6.5.

[`NSFoundationVersionNumber10_6_6`](/documentation/Foundation/NSFoundationVersionNumber10_6_6)

Foundation version released in macOS 10.6.6.

[`NSFoundationVersionNumber10_6_7`](/documentation/Foundation/NSFoundationVersionNumber10_6_7)

Foundation version released in macOS 10.6.7.

[`NSFoundationVersionNumber10_6_8`](/documentation/Foundation/NSFoundationVersionNumber10_6_8)

Foundation version released in macOS 10.6.8.

[`NSFoundationVersionNumber10_7`](/documentation/Foundation/NSFoundationVersionNumber10_7)

Foundation version released in macOS 10.7.

[`NSFoundationVersionNumber10_7_1`](/documentation/Foundation/NSFoundationVersionNumber10_7_1)

Foundation version released in macOS 10.7.1.

[`NSFoundationVersionNumber10_7_2`](/documentation/Foundation/NSFoundationVersionNumber10_7_2)

Foundation version released in macOS 10.7.2.

[`NSFoundationVersionNumber10_7_3`](/documentation/Foundation/NSFoundationVersionNumber10_7_3)

Foundation version released in macOS 10.7.3.

[`NSFoundationVersionNumber10_7_4`](/documentation/Foundation/NSFoundationVersionNumber10_7_4)

Foundation version released in macOS 10.7.4.

[`NSFoundationVersionNumber10_8`](/documentation/Foundation/NSFoundationVersionNumber10_8)

Foundation version released in macOS 10.8.

[`NSFoundationVersionNumber10_8_1`](/documentation/Foundation/NSFoundationVersionNumber10_8_1)

Foundation version released in macOS 10.8.1.

[`NSFoundationVersionNumber10_8_2`](/documentation/Foundation/NSFoundationVersionNumber10_8_2)

Foundation version released in macOS 10.8.2.

[`NSFoundationVersionNumber10_8_3`](/documentation/Foundation/NSFoundationVersionNumber10_8_3)

Foundation version released in macOS 10.8.3.

[`NSFoundationVersionNumber10_8_4`](/documentation/Foundation/NSFoundationVersionNumber10_8_4)

Foundation version released in macOS 10.8.4.

[`NSFoundationVersionNumber10_9`](/documentation/Foundation/NSFoundationVersionNumber10_9)

Foundation version released in macOS 10.9.

[`NSFoundationVersionNumber10_9_1`](/documentation/Foundation/NSFoundationVersionNumber10_9_1)

Foundation version released in macOS 10.9.1.

[`NSFoundationVersionNumber10_9_2`](/documentation/Foundation/NSFoundationVersionNumber10_9_2)

Foundation version released in macOS 10.9.2.

[`NSFoundationVersionNumber10_10`](/documentation/Foundation/NSFoundationVersionNumber10_10)

Foundation version released in macOS version 10.10.

[`NSFoundationVersionNumber10_10_1`](/documentation/Foundation/NSFoundationVersionNumber10_10_1)

Foundation version released in macOS 10.10.1.

[`NSFoundationVersionNumber10_10_2`](/documentation/Foundation/NSFoundationVersionNumber10_10_2)

Foundation version released in macOS 10.10.2.

[`NSFoundationVersionNumber10_10_3`](/documentation/Foundation/NSFoundationVersionNumber10_10_3)

Foundation version released in macOS 10.10.3.

[`NSFoundationVersionNumber10_10_4`](/documentation/Foundation/NSFoundationVersionNumber10_10_4)

Foundation version released in macOS 10.10.4.

[`NSFoundationVersionNumber10_10_5`](/documentation/Foundation/NSFoundationVersionNumber10_10_5)

Foundation version released in macOS 10.10.5.

[`NSFoundationVersionNumber10_10_Max`](/documentation/Foundation/NSFoundationVersionNumber10_10_Max)

Foundation version ceiling for any update of macOS 10.10.x.

[`NSFoundationVersionNumber10_11`](/documentation/Foundation/NSFoundationVersionNumber10_11)

Foundation version released in macOS 10.11.

[`NSFoundationVersionNumber10_11_1`](/documentation/Foundation/NSFoundationVersionNumber10_11_1)

Foundation version released in macOS 10.11.1.

[`NSFoundationVersionNumber10_11_2`](/documentation/Foundation/NSFoundationVersionNumber10_11_2)

Foundation version released in macOS 10.11.2.

[`NSFoundationVersionNumber10_11_3`](/documentation/Foundation/NSFoundationVersionNumber10_11_3)

Foundation version released in macOS 10.11.3.

[`NSFoundationVersionNumber10_11_4`](/documentation/Foundation/NSFoundationVersionNumber10_11_4)

Foundation version released in macOS 10.11.4.

[`NSFoundationVersionNumber10_11_Max`](/documentation/Foundation/NSFoundationVersionNumber10_11_Max)

Foundation version ceiling for any update of macOS 10.11.x.

### iOS Version Numbers

Also applicable to tvOS and watchOS.

[`NSFoundationVersionNumber_iPhoneOS_2_0`](/documentation/Foundation/NSFoundationVersionNumber_iPhoneOS_2_0)

Foundation version released in iOS 2.0.

[`NSFoundationVersionNumber_iPhoneOS_2_1`](/documentation/Foundation/NSFoundationVersionNumber_iPhoneOS_2_1)

Foundation version released in iOS 2.1.

[`NSFoundationVersionNumber_iPhoneOS_2_2`](/documentation/Foundation/NSFoundationVersionNumber_iPhoneOS_2_2)

Foundation version released in iOS 2.2.

[`NSFoundationVersionNumber_iPhoneOS_3_0`](/documentation/Foundation/NSFoundationVersionNumber_iPhoneOS_3_0)

Foundation version released in iOS 3.0.

[`NSFoundationVersionNumber_iPhoneOS_3_1`](/documentation/Foundation/NSFoundationVersionNumber_iPhoneOS_3_1)

Foundation version released in iOS 3.1.

[`NSFoundationVersionNumber_iPhoneOS_3_2`](/documentation/Foundation/NSFoundationVersionNumber_iPhoneOS_3_2)

Foundation version released in iOS 3.2.

[`NSFoundationVersionNumber_iOS_4_0`](/documentation/Foundation/NSFoundationVersionNumber_iOS_4_0)

Foundation version released in iOS version 4.0.

[`NSFoundationVersionNumber_iOS_4_1`](/documentation/Foundation/NSFoundationVersionNumber_iOS_4_1)

Foundation version released in iOS version 4.1.

[`NSFoundationVersionNumber_iOS_4_2`](/documentation/Foundation/NSFoundationVersionNumber_iOS_4_2)

Foundation version released in iOS version 4.2.

[`NSFoundationVersionNumber_iOS_4_3`](/documentation/Foundation/NSFoundationVersionNumber_iOS_4_3)

Foundation version released in iOS version 4.3.

[`NSFoundationVersionNumber_iOS_5_0`](/documentation/Foundation/NSFoundationVersionNumber_iOS_5_0)

Foundation version released in iOS version 5.0.

[`NSFoundationVersionNumber_iOS_5_1`](/documentation/Foundation/NSFoundationVersionNumber_iOS_5_1)

Foundation version released in iOS version 5.1.

[`NSFoundationVersionNumber_iOS_6_0`](/documentation/Foundation/NSFoundationVersionNumber_iOS_6_0)

Foundation version released in iOS version 6.0.

[`NSFoundationVersionNumber_iOS_6_1`](/documentation/Foundation/NSFoundationVersionNumber_iOS_6_1)

Foundation version released in iOS version 6.1.

[`NSFoundationVersionNumber_iOS_7_0`](/documentation/Foundation/NSFoundationVersionNumber_iOS_7_0)

Foundation version released in iOS version 7.0.

[`NSFoundationVersionNumber_iOS_7_1`](/documentation/Foundation/NSFoundationVersionNumber_iOS_7_1)

Foundation version released in iOS version 7.1.

[`NSFoundationVersionNumber_iOS_8_0`](/documentation/Foundation/NSFoundationVersionNumber_iOS_8_0)

Foundation version released in iOS version 8.0.

[`NSFoundationVersionNumber_iOS_8_1`](/documentation/Foundation/NSFoundationVersionNumber_iOS_8_1)

Foundation version released in iOS version 8.1.

[`NSFoundationVersionNumber_iOS_8_2`](/documentation/Foundation/NSFoundationVersionNumber_iOS_8_2)

Foundation version released in iOS version 8.2.

[`NSFoundationVersionNumber_iOS_8_3`](/documentation/Foundation/NSFoundationVersionNumber_iOS_8_3)

Foundation version released in iOS version 8.3.

[`NSFoundationVersionNumber_iOS_8_4`](/documentation/Foundation/NSFoundationVersionNumber_iOS_8_4)

Foundation version released in iOS version 8.4.

[`NSFoundationVersionNumber_iOS_8_x_Max`](/documentation/Foundation/NSFoundationVersionNumber_iOS_8_x_Max)

Foundation version ceiling for any update of iOS version 8.x.

[`NSFoundationVersionNumber_iOS_9_0`](/documentation/Foundation/NSFoundationVersionNumber_iOS_9_0)

Foundation version released in iOS version 9.0.

[`NSFoundationVersionNumber_iOS_9_1`](/documentation/Foundation/NSFoundationVersionNumber_iOS_9_1)

Foundation version released in iOS version 9.1.

[`NSFoundationVersionNumber_iOS_9_2`](/documentation/Foundation/NSFoundationVersionNumber_iOS_9_2)

Foundation version released in iOS version 9.2.

[`NSFoundationVersionNumber_iOS_9_3`](/documentation/Foundation/NSFoundationVersionNumber_iOS_9_3)

Foundation version released in iOS version 9.3.

[`NSFoundationVersionNumber_iOS_9_4`](/documentation/Foundation/NSFoundationVersionNumber_iOS_9_4)

Foundation version released in iOS version 9.4.

[`NSFoundationVersionNumber_iOS_9_x_Max`](/documentation/Foundation/NSFoundationVersionNumber_iOS_9_x_Max)

Foundation version ceiling for any update of iOS version 9.x.


---

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