diff --git a/appstore_backend/apps.json b/appstore_backend/apps.json
index 28d181aa..09288b31 100644
--- a/appstore_backend/apps.json
+++ b/appstore_backend/apps.json
@@ -51,6 +51,18 @@
 "category": "art"
 }
 
+,{
+"name": "HelloWorld",
+"publisher": "ACME Inc",
+"short_description": "Minimal app",
+"long_description": "Demonstrates the simplest app.",
+"icon_url": "http://demo.lnpiggy.com:2121/apps/com.example.helloworld_0.0.1.mpk_icon_64x64.png",
+"download_url": "http://demo.lnpiggy.com:2121/apps/com.example.helloworld_0.0.1.mpk",
+"fullname": "com.example.helloworld",
+"version": "0.0.1",
+"entrypoint": "assets/hello.py",
+"category": "development"
+}
 ,{
 "name": "IMU Tester",
 "publisher": "ACME Inc",
diff --git a/internal_filesystem/builtin/apps/com.example.appstore/assets/appstore.py b/internal_filesystem/builtin/apps/com.example.appstore/assets/appstore.py
index da2802c4..90c39742 100644
--- a/internal_filesystem/builtin/apps/com.example.appstore/assets/appstore.py
+++ b/internal_filesystem/builtin/apps/com.example.appstore/assets/appstore.py
@@ -241,11 +241,11 @@ def download_apps(json_url):
 
 def download_icons():
     for app in apps:
-        print("Downloading icon for app ")
+        print(f"Downloading icon for {app.name}")
         image_dsc = download_icon(app.icon_url)
         app.image_dsc = image_dsc # save it for the app detail page
-        lv.async_call(lambda l, id=app.image_dsc: app.image.set_src(id), None)
-        time.sleep_ms(50) # wait until image updated
+        lv.async_call(lambda l: app.image.set_src(image_dsc), None)
+        time.sleep_ms(round(th.duration*1.5)) # not waiting here will result in some async_calls() not being executed
     print("Finished downloading icons...")