diff --git a/shell/platform/darwin/ios/framework/Source/FlutterDartProject.mm b/shell/platform/darwin/ios/framework/Source/FlutterDartProject.mm
index 7db793424c4ce..a9bbe4fa7bda9 100644
--- a/shell/platform/darwin/ios/framework/Source/FlutterDartProject.mm
+++ b/shell/platform/darwin/ios/framework/Source/FlutterDartProject.mm
@@ -200,9 +200,10 @@
   settings.may_insecurely_connect_to_all_domains = true;
   settings.domain_network_policy = "";
 
-  // Whether to enable wide gamut colors.
+  // Whether to enable Impeller.
   NSNumber* nsEnableWideGamut = [mainBundle objectForInfoDictionaryKey:@"FLTEnableWideGamut"];
-  BOOL enableWideGamut = nsEnableWideGamut ? nsEnableWideGamut.boolValue : YES;
+  // TODO(gaaclarke): Make this value `on` by default (pending memory audit).
+  BOOL enableWideGamut = nsEnableWideGamut ? nsEnableWideGamut.boolValue : NO;
   settings.enable_wide_gamut = enableWideGamut;
 
   // TODO(dnfield): We should reverse the order for all these settings so that command line options