diff --git a/CHANGELOG.md b/CHANGELOG.md
index 28984152b..a14f74252 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,12 +1,14 @@
 ## Next
 
+- `optOut` wasn't respected in capture methods [#114](https://github.com/PostHog/posthog-ios/pull/114)
+
 ## 3.2.2 - 2024-03-01
 
-- API requests do a 10s timeoutInterval instead of 60s  [#113](https://github.com/PostHog/posthog-ios/pull/113)
+- API requests do a 10s timeoutInterval instead of 60s [#113](https://github.com/PostHog/posthog-ios/pull/113)
 
 ## 3.2.1 - 2024-02-26
 
-- PrivacyInfo manifest set in the SPM and CocoaPods config  [#112](https://github.com/PostHog/posthog-ios/pull/112)
+- PrivacyInfo manifest set in the SPM and CocoaPods config [#112](https://github.com/PostHog/posthog-ios/pull/112)
 
 ## 3.2.0 - 2024-02-23
 
@@ -110,7 +112,7 @@ Check out the [USAGE](https://github.com/PostHog/posthog-ios/blob/main/USAGE.md)
 
 ## 2.0.0 - 2022-08-29
 
-- Add support for groups, simplefeature flags, and  multivariate feature flags
+- Add support for groups, simplefeature flags, and multivariate feature flags
 
 ## 1.4.4 - 2021-11-19
 
diff --git a/PostHog/PostHogSDK.swift b/PostHog/PostHogSDK.swift
index c1be3517a..422f299c7 100644
--- a/PostHog/PostHogSDK.swift
+++ b/PostHog/PostHogSDK.swift
@@ -321,6 +321,10 @@ private let sessionChangeThreshold: TimeInterval = 60 * 30
             return
         }
 
+        if isOptOutState() {
+            return
+        }
+
         guard let queue = queue, let sessionManager = sessionManager else {
             return
         }
@@ -372,6 +376,14 @@ private let sessionChangeThreshold: TimeInterval = 60 * 30
         capture(event, properties: properties, userProperties: userProperties, userPropertiesSetOnce: userPropertiesSetOnce, groupProperties: nil)
     }
 
+    private func isOptOutState() -> Bool {
+        if config.optOut {
+            hedgeLog("PostHog is in OptOut state.")
+            return true
+        }
+        return false
+    }
+
     @objc(captureWithEvent:properties:userProperties:userPropertiesSetOnce:groupProperties:)
     public func capture(_ event: String,
                         properties: [String: Any]? = nil,
@@ -383,6 +395,10 @@ private let sessionChangeThreshold: TimeInterval = 60 * 30
             return
         }
 
+        if isOptOutState() {
+            return
+        }
+
         guard let queue = queue else {
             return
         }
@@ -418,6 +434,10 @@ private let sessionChangeThreshold: TimeInterval = 60 * 30
             return
         }
 
+        if isOptOutState() {
+            return
+        }
+
         guard let queue = queue else {
             return
         }
@@ -438,6 +458,10 @@ private let sessionChangeThreshold: TimeInterval = 60 * 30
             return
         }
 
+        if isOptOutState() {
+            return
+        }
+
         guard let queue = queue else {
             return
         }
@@ -484,6 +508,10 @@ private let sessionChangeThreshold: TimeInterval = 60 * 30
             return
         }
 
+        if isOptOutState() {
+            return
+        }
+
         guard let queue = queue else {
             return
         }
@@ -516,6 +544,10 @@ private let sessionChangeThreshold: TimeInterval = 60 * 30
             return
         }
 
+        if isOptOutState() {
+            return
+        }
+
         _ = groups([type: key])
 
         groupIdentify(type: type, key: key, groupProperties: sanitizeDicionary(groupProperties))
diff --git a/PostHogTests/PostHogSDKTest.swift b/PostHogTests/PostHogSDKTest.swift
index ab59b0fbd..9a89889ec 100644
--- a/PostHogTests/PostHogSDKTest.swift
+++ b/PostHogTests/PostHogSDKTest.swift
@@ -205,6 +205,21 @@ class PostHogSDKTest: QuickSpec {
             sut.close()
         }
 
+        it("does not capture event if opt out") {
+            let sut = self.getSut()
+
+            sut.optOut()
+
+            sut.capture("event")
+
+            // no need to await 15s
+            let events = getBatchedEvents(server, timeout: 1.0, failIfNotCompleted: false)
+            expect(events.count) == 0
+
+            sut.reset()
+            sut.close()
+        }
+
         it("calls reloadFeatureFlags") {
             let sut = self.getSut()
 
diff --git a/PostHogTests/TestUtils/TestPostHog.swift b/PostHogTests/TestUtils/TestPostHog.swift
index ee6107c4a..8351616d9 100644
--- a/PostHogTests/TestUtils/TestPostHog.swift
+++ b/PostHogTests/TestUtils/TestPostHog.swift
@@ -9,10 +9,10 @@ import Foundation
 import PostHog
 import XCTest
 
-func getBatchedEvents(_ server: MockPostHogServer) -> [PostHogEvent] {
-    let result = XCTWaiter.wait(for: [server.batchExpectation!], timeout: 15.0)
+func getBatchedEvents(_ server: MockPostHogServer, timeout: TimeInterval = 15.0, failIfNotCompleted: Bool = true) -> [PostHogEvent] {
+    let result = XCTWaiter.wait(for: [server.batchExpectation!], timeout: timeout)
 
-    if result != XCTWaiter.Result.completed {
+    if result != XCTWaiter.Result.completed, failIfNotCompleted {
         XCTFail("The expected requests never arrived")
     }