On Firefox, it even lets you paste images in! It’s almost a joke–it’s just a single HTML box with the “contentEditable” attribute–but it works, so who cares?
I’ve barely used Google Docs so I can’t really tell you. But Keep replaced the spiral-bound 3 by 5 notebook I used to keep in my pocket. To dos, shopping lists, timed reminders, it’ll even take a picture in the app and you can label it. If an appliance in a rental needs a part or service, I’ll just take a picture of the model/serial number plate.