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 (2.5.7), but you can try downloading it from the developer's site
Download version 2.4 from Mac Informer
Version: 2.4
Date update: Jul 14, 2016
File name: net_belote.dmg
Size: 9.1 MB