#### Functional

###### Does the app run without any crashes?

###### Does the app include valid biometric authentication, either via fingerprint or camera?

###### Can you confirm that only the app's user are able to access the notes?

###### Is it possible to add a new note through the app?

###### Can you delete a note from the app?

###### Is it possible to delete all the notes?

###### Is it possible to edit an existing note in the app?

###### Is the note saved and updated properly after editing it in the app?

###### Does the app display an error message if any required field is left empty when adding or editing a note?

###### Do all notes remain visible after closing and reopening the app?

###### If you add a note, save it, close the app, reopen it, edit the same note, and then close and reopen the app again, does the updated note value persist?