diff --git a/hello_imgui_cmake/hello_imgui_build_lib.cmake b/hello_imgui_cmake/hello_imgui_build_lib.cmake
index 0bc8278f..923da1b5 100644
--- a/hello_imgui_cmake/hello_imgui_build_lib.cmake
+++ b/hello_imgui_cmake/hello_imgui_build_lib.cmake
@@ -233,6 +233,9 @@ function(him_add_hello_imgui)
     if(APPLE AND NOT IOS)
         target_compile_definitions(${HELLOIMGUI_TARGET} PUBLIC HELLOIMGUI_MACOS)
     endif()
+    if(APPLE AND IOS)
+        target_compile_definitions(${HELLOIMGUI_TARGET} PUBLIC HELLOIMGUI_IOS)
+    endif()
     if(APPLE)
         target_compile_options(${HELLOIMGUI_TARGET} PRIVATE "-x" "objective-c++")
     endif()
diff --git a/src/hello_imgui/internal/backend_impls/abstract_runner.cpp b/src/hello_imgui/internal/backend_impls/abstract_runner.cpp
index b08085dc..541bae53 100644
--- a/src/hello_imgui/internal/backend_impls/abstract_runner.cpp
+++ b/src/hello_imgui/internal/backend_impls/abstract_runner.cpp
@@ -370,6 +370,9 @@ float _DefaultOsFontRenderingScale()
         // while screen renders at 2x scale.
         fontSizeIncreaseFactor = (float) NSScreen.mainScreen.backingScaleFactor;
     #endif
+    #ifdef HELLOIMGUI_IOS
+    fontSizeIncreaseFactor = 2.0; // Retina
+    #endif
 
     #ifdef HELLOIMGUI_WITH_REMOTE_DISPLAY
     if (HelloImGui::GetRunnerParams()->remoteParams.enableRemoting)