There are plenty of fancy iPhone calendar apps that can help you become more productive. FileCalendar is useful for managing your files. It lets you save files directly to your events. It works with your iPhone calendar and lets you upload files to other apps. You can also send files from other apps to FileCalendar.
FileCalendar allows you to shoot images with your camera and attach it to your events. Files can also be uploaded to the cloud. The app is compatible with the most common file types. You can find out more about it here.