diff --git a/ios/project.yml b/ios/project.yml
index e44c86c..cbe4e59 100644
--- a/ios/project.yml
+++ b/ios/project.yml
@@ -34,6 +34,9 @@ targets:
         # works on a free personal team -- unlike CarPlay, which Apple has to grant.
         UIBackgroundModes: [audio]
         UILaunchScreen: {}
+        # Mac idiom rather than a scaled iPad. Without this a Catalyst app draws its iPad
+        # interface at 77%, which is why everything read small on the Mac.
+        UIDesignRequiresCompatibility: false
         # iOS 27 will not run an app that has not adopted the scene lifecycle. A CarPlay app is a
         # second scene beside this one, so its role goes here too when the entitlement exists.
         UIApplicationSceneManifest:
@@ -61,6 +64,9 @@ targets:
         # at all and the Mac destination simply did not exist.
         ASSETCATALOG_COMPILER_APPICON_NAME: AppIcon
         SUPPORTS_MACCATALYST: "YES"
+        # Apple Silicon only. The default builds a universal binary, and the x86_64 half is
+        # weight nothing here will ever run.
+        ARCHS[sdk=macosx*]: arm64
         DERIVE_MACCATALYST_PRODUCT_BUNDLE_IDENTIFIER: "NO"
 
   iPodderXUITests: