We do not have a download file for the latest version (1.4.1427), but you can try downloading it from the developer's site
Download version 1.3.1386 from Software Informer
Scanned by 73 antivirus programs on Feb 9, 2024.
The file is clean, see the report.
Version: 1.3.1386 (x86)
Date update: Apr 30, 2015
File name: optimuser_setup_1.3.1386.0.en-us.exe
Size: 24.9 MB