diff --git a/app/build.gradle b/app/build.gradle
index ffa92cddd2..da06e17acd 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -105,7 +105,7 @@ android {
     defaultConfig {
         multiDexEnabled true
         versionCode 1500
-        version "3.0.0.2-dev-n"
+        version "3.0.0.2-autotune-dev-n0"
         buildConfigField "String", "VERSION", '"' + version + '"'
         buildConfigField "String", "BUILDVERSION", '"' + generateGitBuild() + '-' + generateDate() + '"'
         buildConfigField "String", "REMOTE", '"' + generateGitRemote() + '"'
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotuneFragment.kt b/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotuneFragment.kt
index 9fcc4b8db2..0f2834c90e 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotuneFragment.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotuneFragment.kt
@@ -100,7 +100,6 @@ class AutotuneFragment : DaggerFragment() {
         )
         binding.autotuneRun.setOnClickListener {
             val daysBack = SafeParse.stringToInt(binding.tuneDays.text)
-            autotunePlugin.calculationRunning = true
             autotunePlugin.lastNbDays = daysBack.toString()
             log("Run Autotune $profileName, $daysBack days")
             Thread {
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotuneIob.kt b/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotuneIob.kt
index 925d290ee4..a634ee876c 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotuneIob.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotuneIob.kt
@@ -59,14 +59,28 @@ open class AutotuneIob @Inject constructor(
         initializeTreatmentData(from - range(), to)
         initializeTempBasalData(from - range(), to, tunedProfile)
         initializeExtendedBolusData(from - range(), to, tunedProfile)
-        tempBasals = ArrayList(tempBasals.toList().sortedWith { o1: TemporaryBasal, o2: TemporaryBasal -> (o2.timestamp - o1.timestamp).toInt() })
-        // Without Neutral TBR, Autotune Web will ignore iob for periods without TBR running
-        addNeutralTempBasal(from - range(), to, tunedProfile)
-        nsTreatments = ArrayList(nsTreatments.toList().sortedWith { o1: NsTreatment, o2: NsTreatment -> (o2.date - o1.date).toInt() })
-        boluses = ArrayList(boluses.toList().sortedWith { o1: Bolus, o2: Bolus -> (o2.timestamp - o1.timestamp).toInt() })
+        sortTempBasal()
+        addNeutralTempBasal(from - range(), to, tunedProfile)        // Without Neutral TBR, Autotune Web will ignore iob for periods without TBR running
+        sortNsTreatments()
+        sortBoluses()
         aapsLogger.debug(LTag.AUTOTUNE, "Nb Treatments: " + nsTreatments.size + " Nb meals: " + meals.size)
     }
 
+    @Synchronized
+    private fun sortTempBasal() {
+        tempBasals = ArrayList(tempBasals.toList().sortedWith { o1: TemporaryBasal, o2: TemporaryBasal -> (o2.timestamp - o1.timestamp).toInt() })
+    }
+
+    @Synchronized
+    private fun sortNsTreatments() {
+        nsTreatments = ArrayList(nsTreatments.toList().sortedWith { o1: NsTreatment, o2: NsTreatment -> (o2.date - o1.date).toInt() })
+    }
+
+    @Synchronized
+    private fun sortBoluses() {
+        boluses = ArrayList(boluses.toList().sortedWith { o1: Bolus, o2: Bolus -> (o2.timestamp - o1.timestamp).toInt() })
+    }
+
     private fun initializeBgreadings(from: Long, to: Long) {
         glucose = repository.compatGetBgReadingsDataFromTime(from, to, false).blockingGet()
     }
@@ -146,6 +160,7 @@ open class AutotuneIob @Inject constructor(
 
     // addNeutralTempBasal will add a fake neutral TBR (100%) to have correct basal rate in exported file for periods without TBR running
     // to be able to compare results between oref0 algo and aaps
+    @Synchronized
     private fun addNeutralTempBasal(from: Long, to: Long, tunedProfile: ATProfile) {
         var previousStart = to
         for (i in tempBasals.indices) {
@@ -180,6 +195,7 @@ open class AutotuneIob @Inject constructor(
 
     // toSplittedTimestampTB will split all TBR across hours in different TBR with correct absolute value to be sure to have correct basal rate
     // even if profile rate is not the same
+    @Synchronized
     private fun toSplittedTimestampTB(tb: TemporaryBasal, tunedProfile: ATProfile) {
         var splittedTimestamp = tb.timestamp
         val cutInMilliSec = T.mins(60).msecs()                  //30 min to compare with oref0, 60 min to improve accuracy
@@ -295,7 +311,7 @@ open class AutotuneIob @Inject constructor(
         return result
     }
 
-
+    @Synchronized
     fun glucoseToJSON(): String {
         val glucoseJson = JSONArray()
         for (bgreading in glucose)
@@ -303,6 +319,7 @@ open class AutotuneIob @Inject constructor(
         return glucoseJson.toString(2)
     }
 
+    @Synchronized
     fun bolusesToJSON(): String {
         val bolusesJson = JSONArray()
         for (bolus in boluses)
@@ -310,6 +327,7 @@ open class AutotuneIob @Inject constructor(
         return bolusesJson.toString(2)
     }
 
+    @Synchronized
     fun nsHistoryToJSON(): String {
         val json = JSONArray()
         for (t in nsTreatments) {
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotunePlugin.kt b/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotunePlugin.kt
index e379f22026..6a4f3d6a94 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotunePlugin.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/general/autotune/AutotunePlugin.kt
@@ -22,6 +22,7 @@ import info.nightscout.androidaps.utils.MidnightTime
 import info.nightscout.androidaps.utils.T
 import info.nightscout.androidaps.interfaces.BuildHelper
 import info.nightscout.shared.logging.AAPSLogger
+import info.nightscout.shared.logging.LTag
 import info.nightscout.shared.sharedPreferences.SP
 import org.json.JSONException
 import org.json.JSONObject
@@ -65,7 +66,7 @@ class AutotunePlugin @Inject constructor(
 ), Autotune {
     @Volatile override var lastRunSuccess: Boolean = false
     @Volatile var result: String = ""
-    @Volatile var calculationRunning: Boolean = false
+    @Volatile override var calculationRunning: Boolean = false
     @Volatile var lastRun: Long = 0
     @Volatile var selectedProfile = ""
     @Volatile var lastNbDays: String = ""
@@ -76,9 +77,12 @@ class AutotunePlugin @Inject constructor(
     private lateinit var profile: Profile
     val autotuneStartHour: Int = 4
 
-    @Synchronized
     override fun aapsAutotune(daysBack: Int, autoSwitch: Boolean, profileToTune: String) {
         lastRunSuccess = false
+        if (calculationRunning) {
+            aapsLogger.debug(LTag.AUTOMATION, "Autotune run detected, Autotune Run Cancelled")
+            return
+        }
         calculationRunning = true
         tunedProfile = null
         updateButtonVisibility = View.GONE
diff --git a/automation/src/main/java/info/nightscout/androidaps/plugins/general/automation/actions/ActionRunAutotune.kt b/automation/src/main/java/info/nightscout/androidaps/plugins/general/automation/actions/ActionRunAutotune.kt
index c2687fffed..b1da120478 100644
--- a/automation/src/main/java/info/nightscout/androidaps/plugins/general/automation/actions/ActionRunAutotune.kt
+++ b/automation/src/main/java/info/nightscout/androidaps/plugins/general/automation/actions/ActionRunAutotune.kt
@@ -42,13 +42,19 @@ class ActionRunAutotune(injector: HasAndroidInjector) : Action(injector) {
         val profileName = if (inputProfileName.value == rh.gs(R.string.active)) "" else inputProfileName.value
         var message = if (autoSwitch) R.string.autotune_run_with_autoswitch else R.string.autotune_run_without_autoswitch
         Thread {
-            autotunePlugin.atLog("[Automation] Run Autotune $profileName, ${daysBack.value} days, Autoswitch $autoSwitch")
-            autotunePlugin.aapsAutotune(daysBack.value, autoSwitch, profileName)
-            if (!autotunePlugin.lastRunSuccess) {
-                message = R.string.autotune_run_with_error
-                aapsLogger.error(LTag.AUTOMATION, "Error during Autotune Run")
+            if (!autotunePlugin.calculationRunning) {
+                autotunePlugin.atLog("[Automation] Run Autotune $profileName, ${daysBack.value} days, Autoswitch $autoSwitch")
+                autotunePlugin.aapsAutotune(daysBack.value, autoSwitch, profileName)
+                if (!autotunePlugin.lastRunSuccess) {
+                    message = R.string.autotune_run_with_error
+                    aapsLogger.error(LTag.AUTOMATION, "Error during Autotune Run")
+                }
+                callback.result(PumpEnactResult(injector).success(autotunePlugin.lastRunSuccess).comment(message)).run()
+            } else {
+                message = R.string.autotune_run_cancelled
+                aapsLogger.debug(LTag.AUTOMATION, "Autotune run detected, Autotune Run Cancelled")
+                callback.result(PumpEnactResult(injector).success(false).comment(message)).run()
             }
-            callback.result(PumpEnactResult(injector).success(autotunePlugin.lastRunSuccess).comment(message)).run()
         }.start()
         return
     }
diff --git a/core/src/main/java/info/nightscout/androidaps/interfaces/Autotune.kt b/core/src/main/java/info/nightscout/androidaps/interfaces/Autotune.kt
index 83ebcd2530..93c20f71d5 100644
--- a/core/src/main/java/info/nightscout/androidaps/interfaces/Autotune.kt
+++ b/core/src/main/java/info/nightscout/androidaps/interfaces/Autotune.kt
@@ -6,4 +6,5 @@ interface Autotune {
     fun atLog(message: String)
 
     var lastRunSuccess: Boolean
+    var calculationRunning: Boolean
 }
\ No newline at end of file
diff --git a/core/src/main/res/values/strings.xml b/core/src/main/res/values/strings.xml
index 30974f7512..3f5832b0cd 100644
--- a/core/src/main/res/values/strings.xml
+++ b/core/src/main/res/values/strings.xml
@@ -600,6 +600,7 @@
     <string name="autotune_run_without_autoswitch">Autotune runned without profile switch</string>
     <string name="autotune_run_with_autoswitch">Autotune runned and profile automatically switched</string>
     <string name="autotune_run_with_error">Error during last Autotune run</string>
+    <string name="autotune_run_cancelled">Another run of Autotune is detected, run cancelled</string>
 
     <plurals name="days">
         <item quantity="one">%1$d day</item>