diff --git a/src/Calculator.iOS/Calculator.iOS.csproj b/src/Calculator.iOS/Calculator.iOS.csproj
index 1271279e..9d5fc964 100644
--- a/src/Calculator.iOS/Calculator.iOS.csproj
+++ b/src/Calculator.iOS/Calculator.iOS.csproj
@@ -64,6 +64,7 @@
     <CodesignKey>iPhone Developer</CodesignKey>
     <MtouchDebug>true</MtouchDebug>
     <MtouchExtraArgs>-gcc_flags "-lc++ -lstdc++"</MtouchExtraArgs>
+    <BuildIpa>true</BuildIpa>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|iPhone' ">
     <DebugType>none</DebugType>
@@ -75,11 +76,13 @@
     </CodesignEntitlements>
     <MtouchArch>ARM64</MtouchArch>
     <ConsolePause>false</ConsolePause>
-    <MtouchExtraArgs>-gcc_flags "-lc++ -lstdc++"</MtouchExtraArgs>
+    <MtouchExtraArgs>-gcc_flags "-lc++ -lstdc++" --setenv=MONO_GC_PARAMS=soft-heap-limit=512m,nursery-size=64m,evacuation-threshold=66,major=marksweep,concurrent-sweep</MtouchExtraArgs>
     <CodesignProvision>Uno Calculator</CodesignProvision>
     <CodesignKey>iPhone Distribution</CodesignKey>
     <CodesignExtraArgs />
     <CodesignResourceRules />
+    <MtouchUseLlvm>true</MtouchUseLlvm>
+    <MtouchEnableSGenConc>true</MtouchEnableSGenConc>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Ad-Hoc|iPhone' ">
     <DebugType>none</DebugType>
@@ -106,6 +109,9 @@
     <CodesignProvision>Automatic:AppStore</CodesignProvision>
     <CodesignKey>iPhone Distribution</CodesignKey>
   </PropertyGroup>
+  <PropertyGroup Condition=" '$(RunConfiguration)' == 'Default' ">
+    <AppExtensionDebugBundleId />
+  </PropertyGroup>
   <ItemGroup>
     <Compile Include="Main.cs" />
     <None Include="Info.plist">