Apple/Iphone App

Would love to have an app, even if it doesn't have all the features and setting adjustments of the website. But maybe quick quote, calendar (with ability to see guests and click their details) and integrated messaging. Don't need to set up all the settings, adjust things and do all that on it, but just the basics. I find saving the site as an "app" on my home it's not super convenient for the basics that I need it for 9/10 times.