We do not have a download file for the latest version (6.26), but you can try downloading it from the developer's site
دانلود نسخه 6.1 از the developer's website
نسخه: 6.1 (x86/x64)
Date update: Jan 12, 2017
نام پرونده: PreziDesktop_6.16.2.0.exe
حجم: 400 MB