Little-known anti-malware programs display warnings, which are often identified as false positive. Nevertheless, it is recommended to recheck the file with your antivirus software after downloading.
We do not have a download file for the latest version (2.13.4), but you can try downloading it from the developer's site
Download version 2.9 from Mac Informer
Version: 2.9
Date update: May 23, 2019
File name: advancedmactuneup_site.pkg
Size: 4.5 MB