Why is PostSync not available on the App Store?
PostSync needs access to various user files for synching and cleaning. This means that it needs to bypass macOS’s Sandbox security features to do its work. Unfortunately disabling Sandbox protections is against the guidelines for App Store compatibility. Please be assured that PostSync is Apple Developer Certified will not alter files outside of your User folders. (Mostly works with files found in Documents, Movies and Application Support)
How do I run PostSync on a schedule?
Simply add PostSync to a macOS Calendar event. Open Calendar. Add a new Event and click “Add Alert”. Set “Repeat” to “Every Day” or what ever interval you need. Then change “Alert” from none to custom then select “Open File” and browse to PostSync in the Applications folder.