It's safe to download the app. MDA.pl has developed SSF that falls into the Business category. The tool has been downloaded and installed by over 1K users and the latest update was released on Dec 11, 2018.
Google Play displays that this application is rated 3.8 by its users. Get the installation package of SSF 1.9.9.9 that is free of charge and read users' reviews on Droid Informer. The app is built for Android 4.0.3 and higher.