diff --git a/ui/BankingiOSApp/BankingiOSApp.xcodeproj/project.pbxproj b/ui/BankingiOSApp/BankingiOSApp.xcodeproj/project.pbxproj
index 7af03fb1..b0049c9a 100644
--- a/ui/BankingiOSApp/BankingiOSApp.xcodeproj/project.pbxproj
+++ b/ui/BankingiOSApp/BankingiOSApp.xcodeproj/project.pbxproj
@@ -20,6 +20,7 @@
 		3608D6C224FBA9C6006C93A8 /* TrianglePointingDown.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3608D6C124FBA9C6006C93A8 /* TrianglePointingDown.swift */; };
 		3608D6C624FBAB41006C93A8 /* TanGeneratorPositionMarker.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3608D6C524FBAB41006C93A8 /* TanGeneratorPositionMarker.swift */; };
 		3642F00A2500F5AE005186FE /* Divider.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3642F0092500F5AE005186FE /* Divider.swift */; };
+		3642F00C25010021005186FE /* UIKitActivityIndicator.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3642F00B25010021005186FE /* UIKitActivityIndicator.swift */; };
 		366744E224FC4E96002B235A /* SectionWithRightAlignedEditButton.swift in Sources */ = {isa = PBXBuildFile; fileRef = 366744E124FC4E96002B235A /* SectionWithRightAlignedEditButton.swift */; };
 		366FA4DA24C472A90094F009 /* Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = 366FA4D924C472A90094F009 /* Extensions.swift */; };
 		366FA4DC24C479120094F009 /* BankInfoListItem.swift in Sources */ = {isa = PBXBuildFile; fileRef = 366FA4DB24C479120094F009 /* BankInfoListItem.swift */; };
@@ -152,6 +153,7 @@
 		3608D6C124FBA9C6006C93A8 /* TrianglePointingDown.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TrianglePointingDown.swift; sourceTree = "<group>"; };
 		3608D6C524FBAB41006C93A8 /* TanGeneratorPositionMarker.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TanGeneratorPositionMarker.swift; sourceTree = "<group>"; };
 		3642F0092500F5AE005186FE /* Divider.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Divider.swift; sourceTree = "<group>"; };
+		3642F00B25010021005186FE /* UIKitActivityIndicator.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UIKitActivityIndicator.swift; sourceTree = "<group>"; };
 		366744E124FC4E96002B235A /* SectionWithRightAlignedEditButton.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SectionWithRightAlignedEditButton.swift; sourceTree = "<group>"; };
 		366FA4D924C472A90094F009 /* Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Extensions.swift; sourceTree = "<group>"; };
 		366FA4DB24C479120094F009 /* BankInfoListItem.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BankInfoListItem.swift; sourceTree = "<group>"; };
@@ -474,6 +476,7 @@
 				3608D6C524FBAB41006C93A8 /* TanGeneratorPositionMarker.swift */,
 				366744E124FC4E96002B235A /* SectionWithRightAlignedEditButton.swift */,
 				3642F0092500F5AE005186FE /* Divider.swift */,
+				3642F00B25010021005186FE /* UIKitActivityIndicator.swift */,
 			);
 			path = views;
 			sourceTree = "<group>";
@@ -646,6 +649,7 @@
 				36BE064F24C9A17F00CBBB68 /* ImageTanView.swift in Sources */,
 				36E21EDB24DC990300649DC8 /* LabelledUIKitTextField.swift in Sources */,
 				36BE068D24CE41E700CBBB68 /* Styles.swift in Sources */,
+				3642F00C25010021005186FE /* UIKitActivityIndicator.swift in Sources */,
 				36E21ECB24D88DF000649DC8 /* UIKitExtensions.swift in Sources */,
 				360782C524E541970098FEFE /* ScaleImageView.swift in Sources */,
 				366744E224FC4E96002B235A /* SectionWithRightAlignedEditButton.swift in Sources */,
diff --git a/ui/BankingiOSApp/BankingiOSApp/ui/views/AddAccountDialog.swift b/ui/BankingiOSApp/BankingiOSApp/ui/views/AddAccountDialog.swift
index 597438be..bb357c48 100644
--- a/ui/BankingiOSApp/BankingiOSApp/ui/views/AddAccountDialog.swift
+++ b/ui/BankingiOSApp/BankingiOSApp/ui/views/AddAccountDialog.swift
@@ -13,6 +13,8 @@ struct AddAccountDialog: View {
     @State private var password = ""
 
     
+    @State private var isTryingToAddAccount = false
+    
     @State private var errorMessage: Message? = nil
     
     
@@ -48,11 +50,13 @@ struct AddAccountDialog: View {
             Section {
                 HStack {
                     Spacer()
-                    Button(action: { self.addAccount() },
-                           label: { Text("Add") })
-                        .disabled(!self.isRequiredDataEntered())
+                    
+                    Button("Add") { self.addAccount() }
+                        .disabled( !self.isRequiredDataEntered() || isTryingToAddAccount)
+                    
                     Spacer()
                 }
+                .overlay(UIKitActivityIndicator($isTryingToAddAccount), alignment: .leading)
             }
             
         }
@@ -65,7 +69,7 @@ struct AddAccountDialog: View {
     
 
     func handleReturnKeyPress() -> Bool {
-        if self.isRequiredDataEntered() {
+        if self.isRequiredDataEntered() && isTryingToAddAccount == false {
             self.addAccount()
             
             return true
@@ -82,6 +86,8 @@ struct AddAccountDialog: View {
     
     func addAccount() {
         if let bank = bank {
+            isTryingToAddAccount = true
+            
             presenter.addAccountAsync(bankInfo: bank, customerId: customerId, pin: password) { (response) in
                 self.handleAddAccountResponse(response)
             }
@@ -89,6 +95,8 @@ struct AddAccountDialog: View {
     }
     
     func handleAddAccountResponse(_ response: AddAccountResponse) {
+        isTryingToAddAccount = false
+        
         if (response.isSuccessful) {
             DispatchQueue.main.async { // dispatch async as may EnterTanDialog is still displayed so dismiss() won't dismiss this view
                 self.presentation.wrappedValue.dismiss()
diff --git a/ui/BankingiOSApp/BankingiOSApp/ui/views/TransferMoneyDialog.swift b/ui/BankingiOSApp/BankingiOSApp/ui/views/TransferMoneyDialog.swift
index fbab5cca..7ef9e80a 100644
--- a/ui/BankingiOSApp/BankingiOSApp/ui/views/TransferMoneyDialog.swift
+++ b/ui/BankingiOSApp/BankingiOSApp/ui/views/TransferMoneyDialog.swift
@@ -43,6 +43,8 @@ struct TransferMoneyDialog: View {
     
     @State private var instantPayment = false
     
+    @State private var isTransferringMoney = false
+    
     @State private var transferMoneyResponseMessage: Message? = nil
     
     private let inputValidator = InputValidator()
@@ -165,11 +167,13 @@ struct TransferMoneyDialog: View {
             Section {
                 HStack {
                     Spacer()
-                    Button(action: { self.transferMoney() },
-                           label: { Text("Transfer Money") })
-                        .disabled( !self.isRequiredDataEntered())
+                    
+                    Button("Transfer Money") { self.transferMoney() }
+                        .disabled( !self.isRequiredDataEntered() || isTransferringMoney)
+                    
                     Spacer()
                 }
+                .overlay(UIKitActivityIndicator($isTransferringMoney), alignment: .leading)
             }
         }
         .onAppear {
@@ -197,7 +201,7 @@ struct TransferMoneyDialog: View {
     
     
     private func handleReturnKeyPress() -> Bool {
-        if self.isRequiredDataEntered() {
+        if self.isRequiredDataEntered() && isTransferringMoney == false {
             self.transferMoney()
             
             return true
@@ -371,6 +375,8 @@ struct TransferMoneyDialog: View {
     
     private func transferMoney() {
         if let amount = inputValidator.convertAmountString(enteredAmountString: self.amount) {
+            isTransferringMoney = true
+            
             let data = TransferMoneyData(account: account!, creditorName: remitteeName, creditorIban: remitteeIban, creditorBic: remitteeBic, amount: amount, usage: usage, instantPayment: instantPayment)
             
             presenter.transferMoneyAsync(data: data) { response in
@@ -380,6 +386,8 @@ struct TransferMoneyDialog: View {
     }
     
     private func handleTransferMoneyResponse(_ data: TransferMoneyData, _ response: BankingClientResponse) {
+        isTransferringMoney = false
+        
         if (response.isSuccessful) {
             self.transferMoneyResponseMessage = Message(message: Text("Successfully transferred \(data.amount) \("€") to \(data.creditorName)"), primaryButton: .ok {
                 self.presentation.wrappedValue.dismiss()
diff --git a/ui/BankingiOSApp/BankingiOSApp/ui/views/UIKitActivityIndicator.swift b/ui/BankingiOSApp/BankingiOSApp/ui/views/UIKitActivityIndicator.swift
new file mode 100644
index 00000000..9a8d7d14
--- /dev/null
+++ b/ui/BankingiOSApp/BankingiOSApp/ui/views/UIKitActivityIndicator.swift
@@ -0,0 +1,40 @@
+import SwiftUI
+import UIKit
+
+
+struct UIKitActivityIndicator: UIViewRepresentable {
+    
+    private let style: UIActivityIndicatorView.Style
+
+    @Binding private var isAnimating: Bool
+    
+    
+    init(_ isAnimating: Binding<Bool> = .constant(true), _ style: UIActivityIndicatorView.Style = .medium) {
+        _isAnimating = isAnimating
+        
+        self.style = style
+    }
+    
+
+    func makeUIView(context: UIViewRepresentableContext<UIKitActivityIndicator>) -> UIActivityIndicatorView {
+        let indicatorView = UIActivityIndicatorView(style: style)
+        
+        indicatorView.hidesWhenStopped = true
+        
+        return indicatorView
+    }
+
+    func updateUIView(_ uiView: UIActivityIndicatorView, context: UIViewRepresentableContext<UIKitActivityIndicator>) {
+        isAnimating ? uiView.startAnimating() : uiView.stopAnimating()
+    }
+    
+}
+
+
+struct UIKitActivityIndicator_Previews: PreviewProvider {
+
+    static var previews: some View {
+        UIKitActivityIndicator()
+    }
+
+}