The download of the app doesn't contain viruses or any kind of malware. RD - Soluções reais em Multimídia is the developer of Sincades that is related to the Business category. Google Play shows that the tool is rated 3.3 by its users.
This application was downloaded and set up by over 100 users and the latest stable update was on Nov 21, 2016. It's free to get the installer of Sincades, also, you can have a look at users' reviews on Droid Informer. The app works fine on Android 4.0.3 and above.