diff --git a/README copy.md b/README copy.md
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+# A doner Flet app
+
+An example of a minimal Flet app.
+
+To run the app:
+
+```
+flet run [app_directory]
+```
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diff --git a/assets/icon.png b/assets/icon.png
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diff --git a/code.sh b/code.sh
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+cd ./doner
+source .venv/bin/activate
diff --git a/main.py b/main.py
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+import flet as ft
+
+def main(page: ft.Page):
+    page.title = "Döner Rechner"
+    def d_to_g(e):
+        tgeld.value = str(int(tdoner.value)*int(tpreis.value))
+        page.update()
+    def g_to_d(e):
+        tdoner.value = str(int(tgeld.value)/int(tpreis.value))
+        page.update()
+
+    tpreis = ft.TextField(value=5,keyboard_type="NUMBER",scale=0.5)
+    tdoner = ft.TextField(on_change=d_to_g,keyboard_type="NUMBER")
+    tgeld = ft.TextField(on_change=g_to_d,keyboard_type="NUMBER")
+    page.add(ft.SafeArea(ft.Row([tpreis,ft.Text("Preis")])),
+             ft.Row([tdoner,ft.Text("Döner")]),
+             ft.Text("zu"),
+             ft.Row([tgeld,ft.Text("Euro")]))
+
+ft.app(main)
diff --git a/requirements.txt b/requirements.txt
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+flet==0.22.*
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