#### Functional > In order to run and hot reload app either on emulator or device, follow the [instructions](https://docs.flutter.dev/get-started/test-drive?tab=androidstudio#run-the-app) ###### Was the app committed within the required time period? ###### Does the app run without crashes? ###### Does the app display celestial objects on black canvas? ###### Check with the current position of the sun, is it accurate? ###### Are moon, Mars, and Venus visible in the app? ###### Ask student about constellations of their choice, and find them in the app? ###### Check if the retrieved data is either from API or from a file. If the data comes from file, check its validity? ###### Try moving the phone around, does it change the celestial objects shown on the display? ###### Try tapping on the sun, mars. Does the app display basic information about objects, such as mass, name. ###### Ask student about pattern implementation. If they used BLoC ask them to explain the pattern, and [check](https://pub.dev/packages/flutter_bloc) whether they implemented it correctly. ###### Ask student about pattern implementation. If they used Provider ask them to explain the pattern, and [check](https://pub.dev/packages/provider) whether they implemented it correctly.