Yes. The automatic accident detection and emergency alerting is only included in BikerSOS Premium. The app recognizes your accident and automatically notifies your emergency contacts and / or the emergency center. So you get faster help in case of an emergency.
In the free basic version of BikerSOS you can manually set an emergency call using the "Alarm now" button. Only 1 emergency contact can be notified in the event of an accident. The emergency call center gets only alerted in the premium version of BikerSOS.
The advantages of BikerSOS Premium can be found in the lower area of this page:
https://bikersos.com/pd/app/
Here you can go directly to the Premium Checkout:
https://my.bikersos.com/checkout