diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8def1a1..af1ee6f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+# [0.7.3] - 2023-05-02
+### Removed
+- Im-App purchase on android
+
 # [0.7.1] - 2022-08-22
 ### Fixed
 - remove unused ACCESS_FINE_LOCATION permission
diff --git a/android/AndroidManifest.xml b/android/AndroidManifest.xml
index 80a6986..58c8185 100644
--- a/android/AndroidManifest.xml
+++ b/android/AndroidManifest.xml
@@ -10,7 +10,7 @@
 
     <supports-screens android:largeScreens="true" android:normalScreens="true" android:anyDensity="true" android:smallScreens="true"/>
     <application android:hardwareAccelerated="true" android:name="org.qtproject.qt5.android.bindings.QtApplication" android:label="-- %%INSERT_APP_NAME%% --" android:extractNativeLibs="true" android:icon="@drawable/icon">
-        <activity android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation|mcc|mnc|density" android:name="de.itsblue.blueROCK.MainActivity" android:label="-- %%INSERT_APP_NAME%% --" android:screenOrientation="unspecified" android:launchMode="singleInstance">
+        <activity android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation|mcc|mnc|density" android:name="de.itsblue.blueROCK.MainActivity" android:label="-- %%INSERT_APP_NAME%% --" android:screenOrientation="unspecified" android:launchMode="singleInstance" android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
@@ -87,7 +87,7 @@
 
 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
     <uses-permission android:name="android.permission.INTERNET"/>
-    <uses-permission android:name="com.android.vending.BILLING"/>
+
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.CAMERA"/>
 </manifest>
diff --git a/blueROCK.pro b/blueROCK.pro
index e2435cf..a412723 100644
--- a/blueROCK.pro
+++ b/blueROCK.pro
@@ -1,7 +1,7 @@
-QT += quick qml quickcontrols2 purchasing
+QT += quick qml quickcontrols2
 CONFIG += c++11
 
-VERSION = 0.7.2
+VERSION = 0.7.4
 TARGET = blueROCK
 
 # The following define makes your compiler emit warnings if you use
@@ -89,7 +89,7 @@ android {
 
     ANDROID_VERSION_NAME = $$VERSION
     ANDROID_VERSION_CODE = $$droidVersionCode($$ANDROID_VERSION_NAME)
-    ANDROID_TARGET_SDK_VERSION = 30
+    ANDROID_TARGET_SDK_VERSION = 31
 
     ANDROID_HOME = $$(ANDROID_HOME)
     include($$ANDROID_HOME/android_openssl/openssl.pri)
@@ -97,6 +97,7 @@ android {
 }
 
 ios {
+    QT += purchasing
     OBJECTIVE_SOURCES += sources/shareUtils/ios/iosshareutils.mm \
         sources/iospermissionutils.mm \
         sources/shareUtils/ios/docviewcontroller.mm
diff --git a/resources/qml/Components/SpeedFlowChartPopup.qml b/resources/qml/Components/SpeedFlowChartPopup.qml
index 3200d82..93d162f 100644
--- a/resources/qml/Components/SpeedFlowChartPopup.qml
+++ b/resources/qml/Components/SpeedFlowChartPopup.qml
@@ -9,7 +9,7 @@ Rectangle {
 
     // always unlock in debug mode
     //property bool unlocked: QT_DEBUG || appSettings.read("speedBackendPurchase") === "1"
-    property bool unlocked: appSettings.read("speedBackendPurchase") === "1"
+    property bool unlocked: Qt.platform.os !== "iso" || appSettings.read("speedBackendPurchase") === "1"
 
     Component.onCompleted: {
         console.warn("unlocked:", appSettings.read("speedBackendPurchase"))
diff --git a/resources/qml/Pages/StartPage.qml b/resources/qml/Pages/StartPage.qml
index 72dde86..06e416d 100644
--- a/resources/qml/Pages/StartPage.qml
+++ b/resources/qml/Pages/StartPage.qml
@@ -171,7 +171,7 @@ Page {
         id: aboutBluerockDisclaimerDialog
         Material.theme: root.Material.theme
         //% "privacy policy"
-        title: "blueROCK v" + APP_VERSION + "<br>By <a href=\"https://itsblue.de\">Itsblue Development</a>, <a href=\"https://itsblue.de/apps/bluerock\">" + qsTrId("#privacyPolicy") + "</a>"
+        title: "blueROCK v" + APP_VERSION + "<br>By <a href=\"https://itsblue.de\">Itsblue Development</a>, <a href=\"https://itsblue.de/apps/bluerock/privacypolicy.html\">" + qsTrId("#privacyPolicy") + "</a>"
         //% "This app was built using the <a href='https://qt.io'>Qt Framework</a> licensed under the <a href='https://www.gnu.org/licenses/lgpl-3.0.en.html'>GNU lgplV3 license</a>.<br><br>This app is open source and licensed under the <a href='https://www.gnu.org/licenses/agpl-3.0.en.html'>GNU agplV3 license</a>, the source code can be found <a href='https://itsblue.dev/blueROCK/app'>here</a>.<br><br>Resultservice and rankings provided by <a href='http://www.digitalROCK.de'>digital ROCK</a>."
         content: qsTrId("#aboutBluerockDisclaimer")
     }