Add details on mobile app

docs/app/app.md

@@ -4,5 +4,43 @@ title: InvenTree Mobile App
 
 ## InvenTree Mobile App
 
-!!! note "Work In Progress"
-    InvenTree app documentation will be available soon.
+The InvenTree Mobile App brings stock control to your pocket. Integrating seamlessly with the [InvenTree API](../../extend/api), the app provides immediate access to inventory data without requiring physical access to a computer.
+
+Native barcode support provides a multitude of context-sensitive stock control actions, allowing streamlined inventory management at your fingertips.
+
+## Download
+
+### Android
+
+The InvenTree App can be downloaded for Android devices via the [Play Store](https://play.google.com/store/apps/details?id=inventree.inventree_app).
+
+### iOS
+
+!!! missing "Not Yet Available"
+    The InvenTree app is not yet available for iOS devices
+
+## Connect to InvenTree
+
+Use of the InvenTree app assumes that you (the user) have access to an InvenTree server.
+
+!!! success "Profiles"
+    The app supports multiple user profiles, providing simple switching between different InvenTree servers and/or account profiles.
+
+!!! todo "Add Screenshot"
+    Add screenshot of "Profiles" screen
+
+!!! todo "Add Screenshot"
+    Add screenshot of "connection failed" screen
+
+!!! todo "Add Screenshot"
+    Add screenshow of "connection success" screen
+
+## Index Page
+
+!!! todo "TODO"
+    This section requires further work
+
+## Menu Bar
+
+!!! todo "TODO"
+    This section requires further work