diff --git a/blipblop/main.py b/blipblop/main.py
index 6929a56..faa5d03 100644
--- a/blipblop/main.py
+++ b/blipblop/main.py
@@ -18,7 +18,7 @@ def main():
     app.setApplicationName(cnst.application_name)
     app.setApplicationVersion(str(cnst.application_version))
     app.setOrganizationDomain(cnst.organization_name)
-    app.setWindowIcon(QIcon(":/icons/app_icon_png"))
+    # app.setWindowIcon(QIcon(":/icons/app_icon_png"))
     settings = QSettings()
     width = int(settings.value("app/width", 1024))
     height = int(settings.value("app/height", 768))
diff --git a/blipblop/ui/audioblop.py b/blipblop/ui/audioblop.py
index 518ad2d..d8ca4e1 100644
--- a/blipblop/ui/audioblop.py
+++ b/blipblop/ui/audioblop.py
@@ -28,14 +28,22 @@ class AudioBlop(QWidget):
         icon_label.setPixmap(QPixmap(":/icons/auditory_task"))
         grid.addWidget(icon_label, 0, 0, Qt.AlignLeft)
 
-        heading_label = QLabel("Measurement of auditory reaction times\npress enter to start")
+        heading_label = QLabel("Measurement of auditory reaction times")
         font = QFont()
         font.setBold(True)
-        font.setPointSize(20)
+        font.setPointSize(24)
         heading_label.setFont(font)
         heading_label.setStyleSheet("color: #2D4B9A")
-        grid.addWidget(heading_label, 1, 0, 1, 2, Qt.AlignLeft)
+        grid.addWidget(heading_label, 0, 1, 1, 2, Qt.AlignLeft)
 
+        instruction_label = QLabel("* press enter to start\n* press spacebar once you recognize the stimulus")
+        font = QFont()
+        font.setBold(True)
+        font.setPointSize(16)
+        instruction_label.setFont(font)
+        instruction_label.setStyleSheet("color: #2D4B9A")
+        grid.addWidget(instruction_label, 1, 1, 1, 2, Qt.AlignLeft)
+        
         settings_btn = QPushButton(QIcon(":/icons/settings"), "")
         settings_btn.setToolTip("edit task settings")
         settings_btn.setShortcut(QKeySequence("alt+s"))
diff --git a/blipblop/ui/visualblip.py b/blipblop/ui/visualblip.py
index eac2c72..9405757 100644
--- a/blipblop/ui/visualblip.py
+++ b/blipblop/ui/visualblip.py
@@ -26,14 +26,22 @@ class VisualBlip(QWidget):
         icon_label.setPixmap(QPixmap(":/icons/visual_task"))
         grid.addWidget(icon_label, 0, 0, Qt.AlignLeft)
 
-        heading_label = QLabel("Measurement of visual reaction times\npress enter to start")
+        heading_label = QLabel("Measurement of visual reaction times")
         font = QFont()
         font.setBold(True)
-        font.setPointSize(20)
+        font.setPointSize(24)
         heading_label.setFont(font)
         heading_label.setStyleSheet("color: #2D4B9A")
-        grid.addWidget(heading_label, 1, 0, 1, 2, Qt.AlignLeft)
+        grid.addWidget(heading_label, 0, 1, 1, 2, Qt.AlignLeft)
 
+        instruction_label = QLabel("* press enter to start\n* press spacebar once you recognize the stimulus")
+        font = QFont()
+        font.setBold(True)
+        font.setPointSize(16)
+        instruction_label.setFont(font)
+        instruction_label.setStyleSheet("color: #2D4B9A")
+        grid.addWidget(instruction_label, 1, 1, 1, 2, Qt.AlignLeft)
+        
         settings_btn = QPushButton(QIcon(":/icons/settings"), "")
         settings_btn.setToolTip("edit task settings")
         settings_btn.setShortcut(QKeySequence("alt+s"))
diff --git a/blipblop_darwin.spec b/blipblop_darwin.spec
index 65ac540..bd93de1 100644
--- a/blipblop_darwin.spec
+++ b/blipblop_darwin.spec
@@ -55,6 +55,7 @@ app = BUNDLE(exe,
             name='BlipBlop.app',
             icon='icons/blipblop_logo.icns',
             bundle_identifier='de.uni-tuebingen.neuroetho.blipblop',
+            version="0.1.0",
             info_plist={
                 'NSPrincipalClass': 'NSApplication',
                 'NSAppleScriptEnabled': False,
diff --git a/icons/blipblop_logo.icns b/icons/blipblop_logo.icns
index 86e5b37..e202d8b 100644
Binary files a/icons/blipblop_logo.icns and b/icons/blipblop_logo.icns differ
diff --git a/icons/blipblop_logo.ico b/icons/blipblop_logo.ico
index 91fe575..bf363f3 100644
Binary files a/icons/blipblop_logo.ico and b/icons/blipblop_logo.ico differ
diff --git a/icons/blipblop_logo.png b/icons/blipblop_logo.png
index 5896d49..7b45ad5 100644
Binary files a/icons/blipblop_logo.png and b/icons/blipblop_logo.png differ