diff --git a/example/audio/main.go b/example/audio/main.go
index 8a99d0e..ed35bfc 100644
--- a/example/audio/main.go
+++ b/example/audio/main.go
@@ -38,9 +38,9 @@ import (
 	_ "image/jpeg"
 
 	"golang.org/x/mobile/app"
-	"golang.org/x/mobile/app/debug"
 	"golang.org/x/mobile/asset"
 	"golang.org/x/mobile/event"
+	"golang.org/x/mobile/exp/app/debug"
 	"golang.org/x/mobile/exp/audio"
 	"golang.org/x/mobile/exp/sprite"
 	"golang.org/x/mobile/exp/sprite/clock"
diff --git a/example/basic/main.go b/example/basic/main.go
index 3aa604d..b7493b4 100644
--- a/example/basic/main.go
+++ b/example/basic/main.go
@@ -31,8 +31,8 @@ import (
 	"log"
 
 	"golang.org/x/mobile/app"
-	"golang.org/x/mobile/app/debug"
 	"golang.org/x/mobile/event"
+	"golang.org/x/mobile/exp/app/debug"
 	"golang.org/x/mobile/f32"
 	"golang.org/x/mobile/geom"
 	"golang.org/x/mobile/gl"
diff --git a/example/sprite/main.go b/example/sprite/main.go
index 9f3fb23..b5cd487 100644
--- a/example/sprite/main.go
+++ b/example/sprite/main.go
@@ -35,9 +35,9 @@ import (
 	_ "image/jpeg"
 
 	"golang.org/x/mobile/app"
-	"golang.org/x/mobile/app/debug"
 	"golang.org/x/mobile/asset"
 	"golang.org/x/mobile/event"
+	"golang.org/x/mobile/exp/app/debug"
 	"golang.org/x/mobile/exp/sprite"
 	"golang.org/x/mobile/exp/sprite/clock"
 	"golang.org/x/mobile/exp/sprite/glsprite"
diff --git a/app/debug/fps.go b/exp/app/debug/fps.go
similarity index 98%
rename from app/debug/fps.go
rename to exp/app/debug/fps.go
index 5a793ec..e6c211b 100644
--- a/app/debug/fps.go
+++ b/exp/app/debug/fps.go
@@ -3,7 +3,7 @@
 // license that can be found in the LICENSE file.
 
 // Package debug provides GL-based debugging tools for apps.
-package debug // import "golang.org/x/mobile/app/debug"
+package debug // import "golang.org/x/mobile/exp/app/debug"
 
 import (
 	"image"