You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
That sounds like a blower motor resistor issue. When a BMR fails, usually all it can do is give you full power. At least for a regular vehicle, but I don't think the blower motor on the S or X is anything special.