WorshipTools Planning keeps a record of all recent activity on the account. This record can be accessed by users with Administrator or higher permissions, and they can see when something was created, edited, or deleted, with details regarding which user completed the action and which app they were using. From this page, Admins will also be able to restore Services, Songs, and Slides deleted in the last 30 days.
To get to the Activity Log, click your name in the upper right corner (web version) or the gear icon (mobile app) and select it from the resulting list.