Not a high priority, but I think it would be a good idea to add an icon for when you add the website to your homepage and bookmarks for ios and android. It should be fairly easy, just add a few lines of code,and it will supposedly work for android too, even though it's for ios.
Some applicable links:
Apple- Configuring Web ApplicationsApple- Icon and Image SizesI'll admit, I have very little knowledge of web design and coding, so this may be more difficult than I think it is.
I have all the images in the right resolutions if you want them
Here is a reference image for what it would look like