LDS Tools is an app that you can get from the App Store – the current icon is blue, with a meetinghouse silhouette. When you install it from the app store it should show up on your home screen.
Leader and Clerk Resources is a web page, at LCR.LDS.org. To add it to your home screen, navigate to the Leader and Clerk Resources web page in Safari, then click the action sheet icon (square with an arrow coming out of it) and choose the "Add to Home Screen" option. By default, it shows an icon of a notebook with a feather, and the default text is "Clerk." Confirm by tapping "Add" and it should show up as a bookmark pinned to your home screen.
Samuel Bradshaw • If you desire to serve God, you are called to the work.