Each mode works slightly differently. Both ACTIVE and DRIVEmodes feature messageLOUD's patented eyes-free gestures.
In a nutshell, DRIVEmode reads out your messages but does not display them. DRIVEmode features an autostart function when connected to your car's bluetooth.
WORKmode does not read out your messages automatically but does automatically display them on-screen. ACTIVEmode works the same way as DRIVEmode, but is used while exercising and does not autostart when connected to your car's bluetooth.
Here's a handy graphic revealing all the features:
For more information see our website: http://www.messageloud.com/how-loud-works-android-app/modescompared/