diff --git a/.github/workflows/ios-demos.yml b/.github/workflows/ios-demos.yml
index 3a34b47f..8ea26251 100644
--- a/.github/workflows/ios-demos.yml
+++ b/.github/workflows/ios-demos.yml
@@ -25,20 +25,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
 
-      - name: Set up Node.js LTS
-        uses: actions/setup-node@v3
-        with:
-          node-version: lts/*
-
       - name: Install Cocoapods
         run: gem install cocoapods
 
-      - name: Install AppCenter CLI
-        run: npm install -g appcenter-cli
-
-      - name: Make build dir
-        run: mkdir ddp
-
       - name: Run Cocoapods
         run: pod install
 
diff --git a/binding/ios/Cobra-iOS.podspec b/binding/ios/Cobra-iOS.podspec
index 1a585e37..e44195e3 100644
--- a/binding/ios/Cobra-iOS.podspec
+++ b/binding/ios/Cobra-iOS.podspec
@@ -1,10 +1,10 @@
 Pod::Spec.new do |s|
     s.name = 'Cobra-iOS'
     s.module_name = 'Cobra'
-    s.version = '1.2.0'
+    s.version = '2.0.0'
     s.license = {:type => 'Apache 2.0'}
     s.summary = 'iOS binding for Picovoice\'s Cobra voice activity detection (VAD) engine.'
-    s.description = 
+    s.description =
     <<-DESC
     Made in Vancouver, Canada by [Picovoice](https://picovoice.ai)
 
@@ -12,7 +12,7 @@ Pod::Spec.new do |s|
     DESC
     s.homepage = 'https://github.com/Picovoice/cobra/tree/master/binding/ios'
     s.author = { 'Picovoice' => 'hello@picovoice.ai' }
-    s.source = { :git => "https://github.com/Picovoice/cobra.git", :tag => "Cobra-iOS-v1.2.0" }
+    s.source = { :git => "https://github.com/Picovoice/cobra.git", :tag => "Cobra-iOS-v2.0.0" }
     s.ios.deployment_target = '11.0'
     s.swift_version = '5.0'
     s.vendored_frameworks = 'lib/ios/PvCobra.xcframework'
diff --git a/binding/ios/Cobra.swift b/binding/ios/Cobra.swift
index 84184f9e..15dc6693 100644
--- a/binding/ios/Cobra.swift
+++ b/binding/ios/Cobra.swift
@@ -1,5 +1,5 @@
 //
-//  Copyright 2021 Picovoice Inc.
+//  Copyright 2021-2023 Picovoice Inc.
 //  You may not use this file except in compliance with the license. A copy of the license is located in the "LICENSE"
 //  file accompanying this source.
 //  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
@@ -27,15 +27,24 @@ public class Cobra {
     /// Cobra version string
     public static let version = String(cString: pv_cobra_version())
 
+    private static var sdk = "ios"
+
+    public static func setSdk(sdk: String) {
+        self.sdk = sdk
+    }
+
     /// Constructor.
     ///
     /// - Parameters:
     ///   - accessKey: AccessKey obtained from the Picovoice Console (https://console.picovoice.ai/)
     /// - Throws: CobraError
     public init(accessKey: String) throws {
+        pv_set_sdk(Cobra.sdk)
+
         let status = pv_cobra_init(accessKey, &handle)
         if status != PV_STATUS_SUCCESS {
-            throw pvStatusToCobraError(status, "Cobra init failed")
+            let messageStack = try getMessageStack()
+            throw pvStatusToCobraError(status, "Cobra init failed", messageStack)
         }
     }
 
@@ -60,6 +69,10 @@ public class Cobra {
     /// - Returns: Probability of voice activity. It is a floating-point number within [0, 1].
     /// - Throws: CobraError
     public func process(pcm: [Int16]) throws -> Float32 {
+        if handle == nil {
+            throw CobraInvalidStateError("Unable to process - resources have been released")
+        }
+
         if pcm.count != Cobra.frameLength {
             throw CobraInvalidArgumentError(
                 "Frame of audio data must contain \(Cobra.frameLength) samples - given frame contained \(pcm.count)")
@@ -68,39 +81,61 @@ public class Cobra {
         var result: Float32 = 0
         let status = pv_cobra_process(self.handle, pcm, &result)
         if status != PV_STATUS_SUCCESS {
-            throw pvStatusToCobraError(status, "Cobra process failed")
+            let messageStack = try getMessageStack()
+            throw pvStatusToCobraError(status, "Cobra process failed", messageStack)
         }
 
         return result
     }
 
-    private func pvStatusToCobraError(_ status: pv_status_t, _ message: String) -> CobraError {
+    private func pvStatusToCobraError(
+        _ status: pv_status_t,
+        _ message: String,
+        _ messageStack: [String] = []) -> CobraError {
         switch status {
         case PV_STATUS_OUT_OF_MEMORY:
-            return CobraMemoryError(message)
+            return CobraMemoryError(message, messageStack)
         case PV_STATUS_IO_ERROR:
-            return CobraIOError(message)
+            return CobraIOError(message, messageStack)
         case PV_STATUS_INVALID_ARGUMENT:
-            return CobraInvalidArgumentError(message)
+            return CobraInvalidArgumentError(message, messageStack)
         case PV_STATUS_STOP_ITERATION:
-            return CobraStopIterationError(message)
+            return CobraStopIterationError(message, messageStack)
         case PV_STATUS_KEY_ERROR:
-            return CobraKeyError(message)
+            return CobraKeyError(message, messageStack)
         case PV_STATUS_INVALID_STATE:
-            return CobraInvalidStateError(message)
+            return CobraInvalidStateError(message, messageStack)
         case PV_STATUS_RUNTIME_ERROR:
-            return CobraRuntimeError(message)
+            return CobraRuntimeError(message, messageStack)
         case PV_STATUS_ACTIVATION_ERROR:
-            return CobraActivationError(message)
+            return CobraActivationError(message, messageStack)
         case PV_STATUS_ACTIVATION_LIMIT_REACHED:
-            return CobraActivationLimitError(message)
+            return CobraActivationLimitError(message, messageStack)
         case PV_STATUS_ACTIVATION_THROTTLED:
-            return CobraActivationThrottledError(message)
+            return CobraActivationThrottledError(message, messageStack)
         case PV_STATUS_ACTIVATION_REFUSED:
-            return CobraActivationRefusedError(message)
+            return CobraActivationRefusedError(message, messageStack)
         default:
             let pvStatusString = String(cString: pv_status_to_string(status))
-                return CobraError("\(pvStatusString): \(message)")
+                return CobraError("\(pvStatusString): \(message)", messageStack)
+        }
+    }
+
+    private func getMessageStack() throws -> [String] {
+        var messageStackRef: UnsafeMutablePointer<UnsafeMutablePointer<Int8>?>?
+        var messageStackDepth: Int32 = 0
+        let status = pv_get_error_stack(&messageStackRef, &messageStackDepth)
+        if status != PV_STATUS_SUCCESS {
+            throw pvStatusToCobraError(status, "Unable to get Cobra error state")
         }
+
+        var messageStack: [String] = []
+        for i in 0..<messageStackDepth {
+            messageStack.append(String(cString: messageStackRef!.advanced(by: Int(i)).pointee!))
+        }
+
+        pv_free_error_stack(messageStackRef)
+
+        return messageStack
     }
 }
diff --git a/binding/ios/CobraAppTest/CobraAppTest/ViewController.swift b/binding/ios/CobraAppTest/CobraAppTest/ViewController.swift
index 8e615640..f3776308 100644
--- a/binding/ios/CobraAppTest/CobraAppTest/ViewController.swift
+++ b/binding/ios/CobraAppTest/CobraAppTest/ViewController.swift
@@ -1,5 +1,5 @@
 //
-//  Copyright 2022 Picovoice Inc.
+//  Copyright 2022-2023 Picovoice Inc.
 //  You may not use this file except in compliance with the license. A copy of the license is located in the "LICENSE"
 //  file accompanying this source.
 //  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
@@ -9,10 +9,4 @@
 
 import UIKit
 
-class ViewController: UIViewController {
-
-    override func viewDidLoad() {
-        super.viewDidLoad()
-    }
-
-}
+class ViewController: UIViewController { }
diff --git a/binding/ios/CobraAppTest/CobraAppTestUITests/CobraAppTestUITests.swift b/binding/ios/CobraAppTest/CobraAppTestUITests/CobraAppTestUITests.swift
index 3ab452b8..79e08cfc 100644
--- a/binding/ios/CobraAppTest/CobraAppTestUITests/CobraAppTestUITests.swift
+++ b/binding/ios/CobraAppTest/CobraAppTestUITests/CobraAppTestUITests.swift
@@ -1,5 +1,5 @@
 //
-//  Copyright 2022 Picovoice Inc.
+//  Copyright 2022-2023 Picovoice Inc.
 //  You may not use this file except in compliance with the license. A copy of the license is located in the "LICENSE"
 //  file accompanying this source.
 //  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
@@ -13,15 +13,11 @@ import Cobra
 class CobraAppTestUITests: XCTestCase {
 
     private let accessKey = "{TESTING_ACCESS_KEY_HERE}"
-    let thresholdString: String = "{PERFORMANCE_THRESHOLD_SEC}"
 
     override func setUpWithError() throws {
         continueAfterFailure = true
     }
 
-    override func tearDownWithError() throws {
-    }
-
     func testProcess() throws {
         let cobra: Cobra = try Cobra(accessKey: accessKey)
 
@@ -59,40 +55,21 @@ class CobraAppTestUITests: XCTestCase {
 
     }
 
-    func testPerformance() throws {
-
-        try XCTSkipIf(thresholdString == "{PERFORMANCE_THRESHOLD_SEC}")
-
-        let performanceThresholdSec = Double(thresholdString)
-        try XCTSkipIf(performanceThresholdSec == nil)
-
-        let cobra: Cobra = try Cobra(accessKey: accessKey)
-
-        let bundle = Bundle(for: type(of: self))
-        let fileURL: URL = bundle.url(forResource: "sample", withExtension: "wav")!
-
-        let data = try Data(contentsOf: fileURL)
-        let frameLengthBytes = Int(Cobra.frameLength) * 2
-        var pcmBuffer = [Int16](repeating: 0, count: Int(Cobra.frameLength))
-
-        var totalNSec = 0.0
-        var results: [Float32] = []
-        var index = 44
-        while index + frameLengthBytes < data.count {
-            _ = pcmBuffer.withUnsafeMutableBytes { data.copyBytes(to: $0, from: index..<(index + frameLengthBytes)) }
-            let before = CFAbsoluteTimeGetCurrent()
-            let voiceProbability: Float32 = try cobra.process(pcm: pcmBuffer)
-            let after = CFAbsoluteTimeGetCurrent()
-            totalNSec += (after - before)
-            results.append(voiceProbability)
-
-            index += frameLengthBytes
+    func testMessageStack() throws {
+        var first_error: String = ""
+        do {
+            let cobra: Cobra = try Cobra(accessKey: "invalid")
+            XCTAssertNil(cobra)
+        } catch {
+            first_error = "\(error.localizedDescription)"
+            XCTAssert(first_error.count < 1024)
         }
 
-        cobra.delete()
-
-        let totalSec = Double(round(totalNSec * 1000) / 1000)
-        XCTAssertLessThanOrEqual(totalSec, performanceThresholdSec!)
-
+        do {
+            let cobra: Cobra = try Cobra(accessKey: "invalid")
+            XCTAssertNil(cobra)
+        } catch {
+            XCTAssert("\(error.localizedDescription)".count == first_error.count)
+        }
     }
 }
diff --git a/binding/ios/CobraAppTest/Podfile b/binding/ios/CobraAppTest/Podfile
index 20aa8e16..efbdfe85 100644
--- a/binding/ios/CobraAppTest/Podfile
+++ b/binding/ios/CobraAppTest/Podfile
@@ -2,13 +2,13 @@ source 'https://cdn.cocoapods.org/'
 platform :ios, '11.0'
 
 target 'CobraAppTest' do
-  pod 'Cobra-iOS', '~> 1.2.0'
+  pod 'Cobra-iOS', :podspec => 'https://raw.githubusercontent.com/Picovoice/cobra/v2.0-ios/binding/ios/Cobra-iOS.podspec'
 end
 
 target 'CobraAppTestUITests' do
-  pod 'Cobra-iOS', '~> 1.2.0'
+  pod 'Cobra-iOS', :podspec => 'https://raw.githubusercontent.com/Picovoice/cobra/v2.0-ios/binding/ios/Cobra-iOS.podspec'
 end
 
 target 'PerformanceTest' do
-  pod 'Cobra-iOS', '~> 1.2.0'
+  pod 'Cobra-iOS', :podspec => 'https://raw.githubusercontent.com/Picovoice/cobra/v2.0-ios/binding/ios/Cobra-iOS.podspec'
 end
diff --git a/binding/ios/CobraAppTest/Podfile.lock b/binding/ios/CobraAppTest/Podfile.lock
index 77e936cb..b4487f2c 100644
--- a/binding/ios/CobraAppTest/Podfile.lock
+++ b/binding/ios/CobraAppTest/Podfile.lock
@@ -1,16 +1,16 @@
 PODS:
-  - Cobra-iOS (1.2.0)
+  - Cobra-iOS (2.0.0)
 
 DEPENDENCIES:
-  - Cobra-iOS (~> 1.2.0)
+  - Cobra-iOS (from `https://raw.githubusercontent.com/Picovoice/cobra/v2.0-ios/binding/ios/Cobra-iOS.podspec`)
 
-SPEC REPOS:
-  trunk:
-    - Cobra-iOS
+EXTERNAL SOURCES:
+  Cobra-iOS:
+    :podspec: https://raw.githubusercontent.com/Picovoice/cobra/v2.0-ios/binding/ios/Cobra-iOS.podspec
 
 SPEC CHECKSUMS:
-  Cobra-iOS: ff2e2622be1b37cc49935bb400938cb68cca6c18
+  Cobra-iOS: c8d7f9052b9b783b9976243e3092c9b9087f63fc
 
-PODFILE CHECKSUM: 350db7fdeda2f30994f4156e5d5c4048c8931cbb
+PODFILE CHECKSUM: f2a9737621b3736541f8a3899eeff564bc95141a
 
-COCOAPODS: 1.11.2
+COCOAPODS: 1.11.3
diff --git a/binding/ios/CobraErrors.swift b/binding/ios/CobraErrors.swift
index a47aa7a4..dde9ae44 100644
--- a/binding/ios/CobraErrors.swift
+++ b/binding/ios/CobraErrors.swift
@@ -1,5 +1,5 @@
 //
-//  Copyright 2021 Picovoice Inc.
+//  Copyright 2021-2023 Picovoice Inc.
 //  You may not use this file except in compliance with the license. A copy of the license is located in the "LICENSE"
 //  file accompanying this source.
 //  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
@@ -9,17 +9,28 @@
 
 public class CobraError: LocalizedError {
     private let message: String
+    private let messageStack: [String]
 
-    public init (_ message: String) {
+    public init (_ message: String, _ messageStack: [String] = []) {
         self.message = message
+        self.messageStack = messageStack
     }
 
     public var errorDescription: String? {
-        return message
+        var messageString = message
+        if messageStack.count > 0 {
+            messageString += ":"
+            for i in 0..<messageStack.count {
+                messageString += "\n  [\(i)] \(messageStack[i])"
+            }
+        }
+        return messageString
     }
 
     public var name: String {
-        return String(describing: type(of: self))
+        get {
+            return String(describing: type(of: self))
+        }
     }
 }
 
diff --git a/demo/ios/CobraDemo/CobraDemo/ViewModel.swift b/demo/ios/CobraDemo/CobraDemo/ViewModel.swift
index 60b5f300..d0188d71 100644
--- a/demo/ios/CobraDemo/CobraDemo/ViewModel.swift
+++ b/demo/ios/CobraDemo/CobraDemo/ViewModel.swift
@@ -35,8 +35,8 @@ class ViewModel: ObservableObject {
             VoiceProcessor.instance.addErrorListener(VoiceProcessorErrorListener(errorCallback))
             VoiceProcessor.instance.addFrameListener(VoiceProcessorFrameListener(audioCallback))
 
-        } catch is CobraInvalidArgumentError {
-            errorMessage = "ACCESS_KEY '\(ACCESS_KEY)' is invalid."
+        } catch let error as CobraInvalidArgumentError {
+            errorMessage = error.localizedDescription
         } catch is CobraActivationError {
             errorMessage = "ACCESS_KEY activation error."
         } catch is CobraActivationRefusedError {
diff --git a/demo/ios/CobraDemo/Podfile b/demo/ios/CobraDemo/Podfile
index 72d6f6ea..566755b9 100644
--- a/demo/ios/CobraDemo/Podfile
+++ b/demo/ios/CobraDemo/Podfile
@@ -2,6 +2,6 @@ source 'https://cdn.cocoapods.org/'
 platform :ios, '11.0'
 
 target 'CobraDemo' do
-  pod 'Cobra-iOS','~> 1.2.0'
+  pod 'Cobra-iOS', :podspec => 'https://raw.githubusercontent.com/Picovoice/cobra/v2.0-ios/binding/ios/Cobra-iOS.podspec'
   pod 'ios-voice-processor', '~> 1.1.0'
 end
diff --git a/demo/ios/CobraDemo/Podfile.lock b/demo/ios/CobraDemo/Podfile.lock
index 2f5c70f5..1bcd1e21 100644
--- a/demo/ios/CobraDemo/Podfile.lock
+++ b/demo/ios/CobraDemo/Podfile.lock
@@ -1,20 +1,23 @@
 PODS:
-  - Cobra-iOS (1.2.0)
+  - Cobra-iOS (2.0.0)
   - ios-voice-processor (1.1.0)
 
 DEPENDENCIES:
-  - Cobra-iOS (~> 1.2.0)
+  - Cobra-iOS (from `https://raw.githubusercontent.com/Picovoice/cobra/v2.0-ios/binding/ios/Cobra-iOS.podspec`)
   - ios-voice-processor (~> 1.1.0)
 
 SPEC REPOS:
   trunk:
-    - Cobra-iOS
     - ios-voice-processor
 
+EXTERNAL SOURCES:
+  Cobra-iOS:
+    :podspec: https://raw.githubusercontent.com/Picovoice/cobra/v2.0-ios/binding/ios/Cobra-iOS.podspec
+
 SPEC CHECKSUMS:
-  Cobra-iOS: ff2e2622be1b37cc49935bb400938cb68cca6c18
+  Cobra-iOS: c8d7f9052b9b783b9976243e3092c9b9087f63fc
   ios-voice-processor: 8e32d7f980a06d392d128ef1cd19cf6ddcaca3c1
 
-PODFILE CHECKSUM: dcc8350eed61872fda34cda940969c6923f2c3e0
+PODFILE CHECKSUM: 4f296c7a7968d696777782481ce2f484ba88f7b4
 
 COCOAPODS: 1.11.3