diff --git a/examples/objc/AppRTCMobile/ios/ARDMainView.m b/examples/objc/AppRTCMobile/ios/ARDMainView.m
index fcce3c3015..c3bd24a7a0 100644
--- a/examples/objc/AppRTCMobile/ios/ARDMainView.m
+++ b/examples/objc/AppRTCMobile/ios/ARDMainView.m
@@ -29,7 +29,7 @@ static CGFloat const kCallControlMargin = 8;
   if (self = [super initWithFrame:frame]) {
     _roomText = [[UITextField alloc] initWithFrame:CGRectZero];
     _roomText.borderStyle = UITextBorderStyleNone;
-    _roomText.font = [UIFont fontWithName:@"Roboto" size:12];
+    _roomText.font = [UIFont systemFontOfSize:12];
     _roomText.placeholder = @"Room name";
     _roomText.autocorrectionType = UITextAutocorrectionTypeNo;
     _roomText.autocapitalizationType = UITextAutocapitalizationTypeNone;
@@ -73,10 +73,8 @@ static CGFloat const kCallControlMargin = 8;
 
 @implementation ARDMainView {
   ARDRoomTextField *_roomText;
-  UILabel *_callOptionsLabel;
-  UISwitch *_loopbackSwitch;
-  UILabel *_loopbackLabel;
-  UIButton *_startCallButton;
+  UIButton *_startRegularCallButton;
+  UIButton *_startLoopbackCallButton;
   UIButton *_audioLoopButton;
 }
 
@@ -88,40 +86,38 @@ static CGFloat const kCallControlMargin = 8;
     _roomText = [[ARDRoomTextField alloc] initWithFrame:CGRectZero];
     [self addSubview:_roomText];
 
-    UIFont *controlFont = [UIFont fontWithName:@"Roboto" size:20];
-    UIColor *controlFontColor = [UIColor colorWithWhite:0 alpha:.6];
+    UIFont *controlFont = [UIFont boldSystemFontOfSize:18.0];
+    UIColor *controlFontColor = [UIColor whiteColor];
 
-    _callOptionsLabel = [[UILabel alloc] initWithFrame:CGRectZero];
-    _callOptionsLabel.text = @"Call Options";
-    _callOptionsLabel.font = controlFont;
-    _callOptionsLabel.textColor = controlFontColor;
-    [_callOptionsLabel sizeToFit];
-    [self addSubview:_callOptionsLabel];
+    _startRegularCallButton = [UIButton buttonWithType:UIButtonTypeSystem];
+    _startRegularCallButton.titleLabel.font = controlFont;
+    [_startRegularCallButton setTitleColor:controlFontColor forState:UIControlStateNormal];
+    _startRegularCallButton.backgroundColor
+        = [UIColor colorWithRed:66.0/255.0 green:200.0/255.0 blue:90.0/255.0 alpha:1.0];
+    [_startRegularCallButton setTitle:@"Call room" forState:UIControlStateNormal];
+    [_startRegularCallButton addTarget:self
+                                action:@selector(onStartRegularCall:)
+                      forControlEvents:UIControlEventTouchUpInside];
+    [self addSubview:_startRegularCallButton];
 
-    _loopbackSwitch = [[UISwitch alloc] initWithFrame:CGRectZero];
-    [_loopbackSwitch sizeToFit];
-    [self addSubview:_loopbackSwitch];
+    _startLoopbackCallButton = [UIButton buttonWithType:UIButtonTypeSystem];
+    _startLoopbackCallButton.titleLabel.font = controlFont;
+    [_startLoopbackCallButton setTitleColor:controlFontColor forState:UIControlStateNormal];
+    _startLoopbackCallButton.backgroundColor =
+        [UIColor colorWithRed:0.0 green:122.0/255.0 blue:1.0 alpha:1.0];
+    [_startLoopbackCallButton setTitle:@"Loopback call" forState:UIControlStateNormal];
+    [_startLoopbackCallButton addTarget:self
+                                 action:@selector(onStartLoopbackCall:)
+                       forControlEvents:UIControlEventTouchUpInside];
+    [self addSubview:_startLoopbackCallButton];
 
-    _loopbackLabel = [[UILabel alloc] initWithFrame:CGRectZero];
-    _loopbackLabel.text = @"Loopback mode";
-    _loopbackLabel.font = controlFont;
-    _loopbackLabel.textColor = controlFontColor;
-    [_loopbackLabel sizeToFit];
-    [self addSubview:_loopbackLabel];
-
-    _startCallButton = [UIButton buttonWithType:UIButtonTypeSystem];
-    [_startCallButton setTitle:@"Start call"
-                      forState:UIControlStateNormal];
-    _startCallButton.titleLabel.font = controlFont;
-    [_startCallButton sizeToFit];
-    [_startCallButton addTarget:self
-                         action:@selector(onStartCall:)
-               forControlEvents:UIControlEventTouchUpInside];
-    [self addSubview:_startCallButton];
 
     // Used to test what happens to sounds when calls are in progress.
     _audioLoopButton = [UIButton buttonWithType:UIButtonTypeSystem];
     _audioLoopButton.titleLabel.font = controlFont;
+    [_audioLoopButton setTitleColor:controlFontColor forState:UIControlStateNormal];
+    _audioLoopButton.backgroundColor =
+        [UIColor colorWithRed:1.0 green:149.0/255.0 blue:0.0 alpha:1.0];
     [self updateAudioLoopButton];
     [_audioLoopButton addTarget:self
                          action:@selector(onToggleAudioLoop:)
@@ -146,51 +142,42 @@ static CGFloat const kCallControlMargin = 8;
   CGFloat roomTextWidth = bounds.size.width - 2 * kRoomTextFieldMargin;
   CGFloat roomTextHeight = [_roomText sizeThatFits:bounds.size].height;
   _roomText.frame =
-      CGRectMake(kRoomTextFieldMargin, kRoomTextFieldMargin, roomTextWidth, roomTextHeight);
+      CGRectMake(kRoomTextFieldMargin, kRoomTextFieldMargin, roomTextWidth,
+                 roomTextHeight);
 
-  CGFloat callOptionsLabelTop =
-      CGRectGetMaxY(_roomText.frame) + kCallControlMargin * 4;
-  _callOptionsLabel.frame = CGRectMake(kCallControlMargin,
-                                       callOptionsLabelTop,
-                                       _callOptionsLabel.frame.size.width,
-                                       _callOptionsLabel.frame.size.height);
+  CGFloat buttonHeight =
+      (CGRectGetMaxY(self.bounds) - CGRectGetMaxY(_roomText.frame) - kCallControlMargin * 4) / 3;
 
-  CGFloat loopbackModeTop = CGRectGetMaxY(_callOptionsLabel.frame) + kCallControlMargin * 2;
-  CGRect loopbackModeRect = CGRectMake(kCallControlMargin * 3,
-                                       loopbackModeTop,
-                                       _loopbackSwitch.frame.size.width,
-                                       _loopbackSwitch.frame.size.height);
-  _loopbackSwitch.frame = loopbackModeRect;
-  CGFloat loopbackModeLabelCenterX = CGRectGetMaxX(loopbackModeRect) +
-      kCallControlMargin + _loopbackLabel.frame.size.width / 2;
-  _loopbackLabel.center = CGPointMake(loopbackModeLabelCenterX,
-                                      CGRectGetMidY(loopbackModeRect));
+  CGFloat regularCallFrameTop = CGRectGetMaxY(_roomText.frame) + kCallControlMargin;
+  CGRect regularCallFrame = CGRectMake(kCallControlMargin,
+                                       regularCallFrameTop,
+                                       bounds.size.width - 2*kCallControlMargin,
+                                       buttonHeight);
 
-  CGFloat audioLoopTop = CGRectGetMaxY(loopbackModeRect) + kCallControlMargin * 3;
-  _audioLoopButton.frame = CGRectMake(kCallControlMargin,
-                                      audioLoopTop,
-                                      _audioLoopButton.frame.size.width,
-                                      _audioLoopButton.frame.size.height);
+  CGFloat loopbackCallFrameTop = CGRectGetMaxY(regularCallFrame) + kCallControlMargin;
+  CGRect loopbackCallFrame = CGRectMake(kCallControlMargin,
+                                        loopbackCallFrameTop,
+                                        bounds.size.width - 2*kCallControlMargin,
+                                        buttonHeight);
 
-  CGFloat startCallTop =
-      CGRectGetMaxY(_audioLoopButton.frame) + kCallControlMargin * 3;
-  _startCallButton.frame = CGRectMake(kCallControlMargin,
-                                      startCallTop,
-                                      _startCallButton.frame.size.width,
-                                      _startCallButton.frame.size.height);
+  CGFloat audioLoopTop = CGRectGetMaxY(loopbackCallFrame) + kCallControlMargin;
+  CGRect audioLoopFrame = CGRectMake(kCallControlMargin,
+                                     audioLoopTop,
+                                     bounds.size.width - 2*kCallControlMargin,
+                                     buttonHeight);
+
+  _startRegularCallButton.frame = regularCallFrame;
+  _startLoopbackCallButton.frame = loopbackCallFrame;
+  _audioLoopButton.frame = audioLoopFrame;
 }
 
 #pragma mark - Private
 
 - (void)updateAudioLoopButton {
   if (_isAudioLoopPlaying) {
-    [_audioLoopButton setTitle:@"Stop sound"
-                      forState:UIControlStateNormal];
-    [_audioLoopButton sizeToFit];
+    [_audioLoopButton setTitle:@"Stop sound" forState:UIControlStateNormal];
   } else {
-    [_audioLoopButton setTitle:@"Play sound"
-                      forState:UIControlStateNormal];
-    [_audioLoopButton sizeToFit];
+    [_audioLoopButton setTitle:@"Play sound" forState:UIControlStateNormal];
   }
 }
 
@@ -198,8 +185,12 @@ static CGFloat const kCallControlMargin = 8;
   [_delegate mainViewDidToggleAudioLoop:self];
 }
 
-- (void)onStartCall:(id)sender {
-  [_delegate mainView:self didInputRoom:_roomText.roomText isLoopback:_loopbackSwitch.isOn];
+- (void)onStartRegularCall:(id)sender {
+  [_delegate mainView:self didInputRoom:_roomText.roomText isLoopback:NO];
+}
+
+- (void)onStartLoopbackCall:(id)sender {
+  [_delegate mainView:self didInputRoom:_roomText.roomText isLoopback:YES];
 }
 
 @end