diff --git a/iosApp/iosApp/Core/Dependencies.swift b/iosApp/iosApp/Core/Dependencies.swift
index 36c0b9c..048de4d 100644
--- a/iosApp/iosApp/Core/Dependencies.swift
+++ b/iosApp/iosApp/Core/Dependencies.swift
@@ -40,29 +40,32 @@ final class Dependencies {
 
     // MARK: - Kotlin ViewModel Factories
 
+    // SKIE doesn't expose Kotlin default constructor params to Swift, so
+    // pass DataManager.shared explicitly on each factory.
+
     /// Create a new AuthViewModel instance
     func makeAuthViewModel() -> ComposeApp.AuthViewModel {
-        ComposeApp.AuthViewModel()
+        ComposeApp.AuthViewModel(dataManager: ComposeApp.DataManager.shared)
     }
 
     /// Create a new ResidenceViewModel instance
     func makeResidenceViewModel() -> ComposeApp.ResidenceViewModel {
-        ComposeApp.ResidenceViewModel()
+        ComposeApp.ResidenceViewModel(dataManager: ComposeApp.DataManager.shared)
     }
 
     /// Create a new TaskViewModel instance
     func makeTaskViewModel() -> ComposeApp.TaskViewModel {
-        ComposeApp.TaskViewModel()
+        ComposeApp.TaskViewModel(dataManager: ComposeApp.DataManager.shared)
     }
 
     /// Create a new ContractorViewModel instance
     func makeContractorViewModel() -> ComposeApp.ContractorViewModel {
-        ComposeApp.ContractorViewModel()
+        ComposeApp.ContractorViewModel(dataManager: ComposeApp.DataManager.shared)
     }
 
     /// Create a new DocumentViewModel instance
     func makeDocumentViewModel() -> ComposeApp.DocumentViewModel {
-        ComposeApp.DocumentViewModel()
+        ComposeApp.DocumentViewModel(dataManager: ComposeApp.DataManager.shared)
     }
 
     // MARK: - Service Factories
diff --git a/iosApp/iosApp/Login/AppleSignInViewModel.swift b/iosApp/iosApp/Login/AppleSignInViewModel.swift
index ca4a193..edfddfe 100644
--- a/iosApp/iosApp/Login/AppleSignInViewModel.swift
+++ b/iosApp/iosApp/Login/AppleSignInViewModel.swift
@@ -13,6 +13,12 @@ class AppleSignInViewModel: ObservableObject {
 
     // MARK: - Private Properties
     private let appleSignInManager = AppleSignInManager()
+    private let dataManager: DataManagerObservable
+
+    // MARK: - Initialization
+    init(dataManager: DataManagerObservable = .shared) {
+        self.dataManager = dataManager
+    }
 
     // MARK: - Callbacks
     var onSignInSuccess: ((Bool) -> Void)? // Bool indicates if user is verified
diff --git a/iosApp/iosApp/Onboarding/OnboardingTasksViewModel.swift b/iosApp/iosApp/Onboarding/OnboardingTasksViewModel.swift
index 56257f6..835a4f8 100644
--- a/iosApp/iosApp/Onboarding/OnboardingTasksViewModel.swift
+++ b/iosApp/iosApp/Onboarding/OnboardingTasksViewModel.swift
@@ -33,6 +33,14 @@ final class OnboardingTasksViewModel: ObservableObject {
     @Published private(set) var isSubmitting = false
     @Published private(set) var submitError: String?
 
+    // MARK: - Private Properties
+    private let dataManager: DataManagerObservable
+
+    // MARK: - Initialization
+    init(dataManager: DataManagerObservable = .shared) {
+        self.dataManager = dataManager
+    }
+
     // MARK: - Loads
 
     func loadSuggestions(residenceId: Int32) async {
diff --git a/iosApp/iosApp/PasswordReset/PasswordResetViewModel.swift b/iosApp/iosApp/PasswordReset/PasswordResetViewModel.swift
index 37f170a..ae0e57f 100644
--- a/iosApp/iosApp/PasswordReset/PasswordResetViewModel.swift
+++ b/iosApp/iosApp/PasswordReset/PasswordResetViewModel.swift
@@ -31,8 +31,15 @@ class PasswordResetViewModel: ObservableObject {
     // Cancellable delayed transition task
     private var delayedTransitionTask: Task<Void, Never>?
 
+    // MARK: - Private Properties
+    private let dataManager: DataManagerObservable
+
     // MARK: - Initialization
-    init(resetToken: String? = nil) {
+    init(
+        resetToken: String? = nil,
+        dataManager: DataManagerObservable = .shared
+    ) {
+        self.dataManager = dataManager
         // If we have a reset token from deep link, skip to password reset step
         if let token = resetToken {
             self.resetToken = token
diff --git a/iosApp/iosApp/Register/RegisterViewModel.swift b/iosApp/iosApp/Register/RegisterViewModel.swift
index 4ab799a..1269c99 100644
--- a/iosApp/iosApp/Register/RegisterViewModel.swift
+++ b/iosApp/iosApp/Register/RegisterViewModel.swift
@@ -15,8 +15,13 @@ class RegisterViewModel: ObservableObject {
     @Published var errorMessage: String?
     @Published var isRegistered: Bool = false
 
+    // MARK: - Private Properties
+    private let dataManager: DataManagerObservable
+
     // MARK: - Initialization
-    init() {}
+    init(dataManager: DataManagerObservable = .shared) {
+        self.dataManager = dataManager
+    }
 
     // MARK: - Public Methods
     func register() {
diff --git a/iosApp/iosApp/VerifyEmail/VerifyEmailViewModel.swift b/iosApp/iosApp/VerifyEmail/VerifyEmailViewModel.swift
index 59b474b..78ad1ab 100644
--- a/iosApp/iosApp/VerifyEmail/VerifyEmailViewModel.swift
+++ b/iosApp/iosApp/VerifyEmail/VerifyEmailViewModel.swift
@@ -14,10 +14,15 @@ class VerifyEmailViewModel: ObservableObject {
 
     // MARK: - Private Properties
     private let tokenStorage: TokenStorageProtocol
+    private let dataManager: DataManagerObservable
 
     // MARK: - Initialization
-    init(tokenStorage: TokenStorageProtocol? = nil) {
+    init(
+        tokenStorage: TokenStorageProtocol? = nil,
+        dataManager: DataManagerObservable = .shared
+    ) {
         self.tokenStorage = tokenStorage ?? Dependencies.current.makeTokenStorage()
+        self.dataManager = dataManager
     }
 
     // MARK: - Public Methods
diff --git a/iosApp/iosApp/iOSApp.swift b/iosApp/iosApp/iOSApp.swift
index 190e21d..48b84ef 100644
--- a/iosApp/iosApp/iOSApp.swift
+++ b/iosApp/iosApp/iOSApp.swift
@@ -66,6 +66,10 @@ struct iOSApp: App {
     var body: some Scene {
         WindowGroup {
             RootView(deepLinkResetToken: $deepLinkResetToken)
+                // Single source of truth injection — every descendant view can
+                // reach @EnvironmentObject var dataManager: DataManagerObservable
+                // without reading the .shared singleton implicitly.
+                .environmentObject(DataManagerObservable.shared)
                 .environmentObject(themeManager)
                 .environmentObject(contractorSharingManager)
                 .environmentObject(residenceSharingManager)