> This page is for Applications Protection.

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> For a complete documentation index, see https://docs.humansecurity.com/llms.txt.

# iOS, iPadOs, & visionOS changelog

## September 9, 2026

## Version 5.3.2

Improved the SDK’s handling of brightness data collection to address stability issues observed in early versions of iOS 27 public beta.

## September 8, 2026

## Version 4.3.5

Improved the SDK’s handling of brightness data collection to address stability issues observed in early versions of iOS 27 public beta.

## August 25, 2026

## Version 5.3.1

* Bug fixes and improvements.

## August 19, 2026

## Version 5.3.0

* Bug fixes and improvements.

## July 26, 2026

## Version 5.2.0

* PX3 and PX2 token support for the same App ID — both can be active at once.
* Bug fixes and improvements.

## July 13, 2026

## Version 5.1.0

* Added challenge presentation modes (full screen, top, bottom, and center).
* Bot Defender: added a `solvedWithError` challenge outcome when the user completes a challenge but the SDK cannot finalize the session token.
* Doctor App v2: new and improved UX for integration verification and testing.
* Added a public SDK logger for integration diagnostics.
* Deprecated the single-argument `handleBlockResponse` / `handleBlockError` callbacks in favor of detailed overloads.
* Bug fixes and improvements.

## May 13, 2026

## Version 5.0.0

* Hybrid App and Doctor App are now supported in visionOS.
* Swift 6, minimum iOS 13.
* Change some API signatures.
* Bug fixes and improvements.

## February 17, 2026

## Version 4.3.4

* Improved thread safety for concurrent header generation.

## January 15, 2026

## Version 4.3.3

* Enhanced response handling to detect block responses regardless of their position within a JSON payload.

## November 23, 2025

## Version 4.3.2

* Fixed an issue where the challenge’s completion callback might not be invoked during network disruptions.

## November 3, 2025

## Version 4.3.1

* Bug fixes and improvements

## September 17, 2025

## Version 4.3.0

* Added support for Xcode 26 and iOS/iPadOS/visionOS 26.

## August 26, 2025

## Version 4.2.0

* Sightline Cyberfraud Defense is now supported on mobile with a unified, secure Human Session, improving identification, authentication, and stability. Customers must upgrade to this version of the SDK to enable Sightline.

## August 12, 2025

## Version 4.1.2

* Fixed a random crash.

## February 19, 2025

## Version 4.1.1

* Added Accessibility (VoiceOver) support for challenge page and doctor app.
* Fixed challenge presentation for SwiftUI and iPadOS.
* Changed the URLResponse parameter to be optional in canHandleResponse and handleResponse functions to simplify usage.

## January 15, 2025

## Version 4.1.0

* Fixed a bug that cause the calibration screen to appear sometimes.

## October 28, 2024

## Version 4.0.2

* Bug fixes and improvements.

## August 27, 2024

## Version 4.0.1

* Added support for external web views that are still based on `WKWebView`.

## July 18, 2024

## Version 4.0.0

* visionOS support.
* SDK branding - HumanSecurity instead of PerimeterX.
* Major API changes (read how to upgrade from v3 [here](/applications/how-to-upgrade-from-v3)).
* Improvements to the Hybrid App support.
* Add `challengeReferenceId` function that returns the challenge's Reference ID.