diff --git a/SenzorDataCollectorApp.xcodeproj/project.pbxproj b/SenzorDataCollectorApp.xcodeproj/project.pbxproj
index 3d9f51424dd233e5fd786382e4198618ba7d3eb8..19fcfcb70a12606a1692ce498726659eaa82ab2e 100644
--- a/SenzorDataCollectorApp.xcodeproj/project.pbxproj
+++ b/SenzorDataCollectorApp.xcodeproj/project.pbxproj
@@ -489,6 +489,7 @@
 				INFOPLIST_KEY_NSFileProviderPresenceUsageDescription = "The app needs it to save files";
 				INFOPLIST_KEY_NSHumanReadableCopyright = "";
 				INFOPLIST_KEY_NSLocationAlwaysAndWhenInUseUsageDescription = "The needs ot use senzor data";
+				INFOPLIST_KEY_NSMotionUsageDescription = "THe app need is";
 				INFOPLIST_KEY_UIApplicationSceneManifest_Generation = YES;
 				INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
 				INFOPLIST_KEY_UILaunchScreen_Generation = YES;
@@ -526,6 +527,7 @@
 				INFOPLIST_KEY_NSFileProviderPresenceUsageDescription = "The app needs it to save files";
 				INFOPLIST_KEY_NSHumanReadableCopyright = "";
 				INFOPLIST_KEY_NSLocationAlwaysAndWhenInUseUsageDescription = "The needs ot use senzor data";
+				INFOPLIST_KEY_NSMotionUsageDescription = "THe app need is";
 				INFOPLIST_KEY_UIApplicationSceneManifest_Generation = YES;
 				INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
 				INFOPLIST_KEY_UILaunchScreen_Generation = YES;
diff --git a/SenzorDataCollectorApp/Info.plist b/SenzorDataCollectorApp/Info.plist
index fd4062296392fa9425f636ee3ba6990298b6344d..dd703eebf4c484566e67def28ed2ff8195b44644 100644
--- a/SenzorDataCollectorApp/Info.plist
+++ b/SenzorDataCollectorApp/Info.plist
@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>NSMotionUsageDescription</key>
+	<string>App mesasures sensors</string>
 	<key>BGTaskSchedulerPermittedIdentifiers</key>
 	<array>
 		<string>hu.itk.ppke.backgroundTask</string>
diff --git a/SenzorDataCollectorApp/Sensors.swift b/SenzorDataCollectorApp/Sensors.swift
index 03eafa3c7af8e05a041600367f9763d49de60951..5cf4ec758f3e94c29d074859dcdb729315522d1f 100644
--- a/SenzorDataCollectorApp/Sensors.swift
+++ b/SenzorDataCollectorApp/Sensors.swift
@@ -74,20 +74,15 @@ class SensorCollector: ObservableObject {
         gyroStartRecording(motionManager: motionManager)
         magStartRecording(motionManager: motionManager)
         altStartRecording(altimeter: altimeter)
-        
     }
     
     
     func stopAllRecording(motionManager: CMMotionManager, altimeter: CMAltimeter){
-        print("Sensors stopped all recording")
         motionManager.stopAccelerometerUpdates()
         motionManager.stopGyroUpdates()
         motionManager.stopMagnetometerUpdates()
         altimeter.stopRelativeAltitudeUpdates()
-        
-        
-        //many missing :/
-        
+        print("Sensors stopped all recording")
         for index in 0..<activeSensorsList.count {
             activeSensorsList[index].isSensorActive = false
         }
@@ -130,9 +125,6 @@ class SensorCollector: ObservableObject {
     func accStartRecording(motionManager: CMMotionManager){
         //if there is an acc.meter available:
         if(motionManager.isAccelerometerAvailable){
-            
-            //changing the status of the sensor active in the list of sensors
-            
             //set accelerometer update frequency - to the maximum that the device is capable
             motionManager.accelerometerUpdateInterval = motionManager.deviceMotionUpdateInterval
             //start accelerometer update:
diff --git a/SenzorDataCollectorApp/StartingView.swift b/SenzorDataCollectorApp/StartingView.swift
index f8783c85d6567812ec87c0bfcd8187e443bea4f6..6b0ab955ccd874c1560269e16ae19c1e1c731c27 100644
--- a/SenzorDataCollectorApp/StartingView.swift
+++ b/SenzorDataCollectorApp/StartingView.swift
@@ -72,8 +72,9 @@ struct StartingView: View {
                 }.padding().disabled(manager.state != "Ready").opacity(debug ? 0 : 1)
                 
                 Button("STOP Iterations") {
-                    sensor.stopAllRecording(motionManager: motionManager, altimeter: altimeter)
                     customTimer.stopTimer()
+                    sensor.stopAllRecording(motionManager: motionManager, altimeter: altimeter)
+                    
                 }.padding().opacity(debug ? 0 : 1)
                 
                 Text("\(manager.numberOfMeasurements - manager.timerIntervalValues.count >= 0 ? "\(manager.numberOfMeasurements - manager.timerIntervalValues.count)/\(manager.numberOfMeasurements)" : "Not initialised")")
@@ -230,11 +231,11 @@ struct StartingView: View {
 //                }
 //            }
             //----------------------------- NOTIFICAION HANDELING ---------------------------------
-            .alert("\(manager.numberOfMeasurements - manager.timerIntervalValues.count >= 0 ? "\(manager.numberOfMeasurements - manager.timerIntervalValues.count)/\(manager.numberOfMeasurements)" : "Not initialised") Measurement", isPresented: $customTimer.isFinished) {
+            .alert("\(manager.numberOfMeasurements - manager.timerIntervalValues.count >= -1 ? "\(manager.numberOfMeasurements - manager.timerIntervalValues.count)/\(manager.numberOfMeasurements)" : "Not initialised") Measurement", isPresented: $customTimer.isFinished) {
                 Button(manager.timerIntervalValues.count == 0 ? "End" : "Next" ,role: .cancel){
-                    
-                    sensor.stopAllRecording(motionManager: motionManager, altimeter: altimeter)
                     customTimer.stopTimer()
+
+                    sensor.stopAllRecording(motionManager: motionManager, altimeter: altimeter)
                     saveAllToJson()
                     
                     setNextMeasurement()
@@ -244,16 +245,16 @@ struct StartingView: View {
                     }
                 }
                 Button("Stop", role: .destructive){
-                    sensor.stopAllRecording(motionManager: motionManager, altimeter: altimeter)
                     customTimer.stopTimer()
+                    sensor.stopAllRecording(motionManager: motionManager, altimeter: altimeter)
                     saveAllToJson()
                 }
             }
             //------------------ DEMO NOTIFICATION - MEASUREMENT STARTING ----------------------
             .alert("Demo Alert - press start if you are ready to start!", isPresented: $demostart){
                 Button("Start",role: .cancel){
-                    sensor.stopAllRecording(motionManager: motionManager, altimeter: altimeter)
                     customTimer.stopTimer()
+                    sensor.stopAllRecording(motionManager: motionManager, altimeter: altimeter)
                     setNextMeasurement()
                     if customTimer.totalSeconds != 0 {
                         sensor.startAllRecording(motionManager: motionManager, altimeter: altimeter)