How is our app structured?

flowchart
    subgraph activities
    m[MainActivity]
    m --> GroceryListActivity
    m --> PlaceDetailsActivity
    m --> SettingsActivity
    m --> ClassificationActivity

    click m "activities/MainActivity.html"
    click GroceryListActivity "activities/GroceryListActivity.html"
    click PlaceDetailsActivity "activities/PlaceDetailsActivity.html"
    click SettingsActivity "activities/SettingsActivity.html"
    click ClassificationActivity "activities/ClassificationActivity.html"


    end
    subgraph utilities
    TextToSpeechUtility
    SpeechToTextButton
    SpeechToTextUtility

    end