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.
I would suggest contacting your local Tesla retail store or Service Center and ask them for a referral to a local tint vendor. That is what I did and they referred me to a shop with a ton of experience tinting Teslas. There are two benefits. First, you will likely be referred to a competent installer. Second, if there is a problem, you can tell Tesla that you went to the installer Tesla recommended.