The app provides a simplified dialer that has an SOS slider you program. It is meant for a guided access mode when Apple allows calls from that setting. Now outside of that mode but you have a simplified dialer with an SOS at the top for use. For simplicity of use for the end user please restart the app to enter more numbers. It is meant for a new Apple potential guided access mode where phone calls are allowed. In the meantime it operates with absolute simplicity and elegance to allow dialing of numbers and an SOS slider. demo here. https://share.icloud.com/photos/006_w-j0H4DmGWznK965zX4eQ