Install the Dneail Online app.
For reference, here's the link to Dneail Online or do.: https://online.dneail.com
Mac or Windows
You will need to use Chrome, Edge or any other Chromium-based browser. When visiting do., you will see an alert in the search to add do. as an app.
You will need to use Safari. Go to Dneail Online and from any page, click the Share button at the bottom of the screen (the Safari share button), then scroll down to find "Add to Home Screen", then in the popup that occurs wait for the do. icon to appear in the app icon and click "Add" in the top right corner.