# HitchTimeMetric A metric that measures animation hitch time. ``` struct HitchTimeMetric ``` ## Discussion This metric corresponds to the [`MetricResult.hitchTime(_:)`](/documentation/MetricKit/MetricResult/hitchTime(_:)) case. It appears in both [`intervalEntries`](/documentation/MetricKit/MetricReport/intervalEntries) and [`stateEntries`](/documentation/MetricKit/MetricReport/stateEntries) when state reporting is enabled. The ratio is normalized against total animation duration and incorporates perceptual adjustments, making it the most accurate representation of the hitches users actually experience. ## Topics ### Measurements [`let ratio: Measurement`](/documentation/MetricKit/HitchTimeMetric/ratio) Ratio of time the application spent hitching during tracked animations. [`let totalHitchTime: Measurement`](/documentation/MetricKit/HitchTimeMetric/totalHitchTime) Total time the application spent hitching during tracked animations. [`let totalAnimationTime: Measurement`](/documentation/MetricKit/HitchTimeMetric/totalAnimationTime) Total time the application spent animating. ## Relationships ### Conforms To [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`Encodable`](/documentation/Swift/Encodable) [`Sendable`](/documentation/Swift/Sendable) [`Equatable`](/documentation/Swift/Equatable) [`Hashable`](/documentation/Swift/Hashable) [`Decodable`](/documentation/Swift/Decodable) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)