The app can be used offline, with a few exceptions outlined below.

While offline, any emails, text messages, uploads, or participant data that cannot be sent immediately will be queued within the app.

Once you reconnect to a reliable network (with the app open or running in the background), all pending content will automatically begin uploading and sending.

An Internet connection is required for:

To prevent accidental sign-outs while offline, the log-out button will be disabled. The app will keep you logged in for at least 30 days from your last use. 

Printing requires a WiFi connection but does not need an Internet connection.