This is a sample app for a library project! Please DO NOT report bugs in reviews. For report bugs, please create an issue on my GitHub project.
The download of the app doesn't contain viruses or any kind of malware. Winson Tan is the developer of WScratchView Sample that relates to the Libraries & Demo category. Over 1K users downloaded and set up the tool and its latest update was on Jun 24, 2014.
Google Play shows that this application is rated 3.2 by its users. Use the opportunity to get the setup package of WScratchView Sample 1.0 free of charge and take a look at users' reviews on Droid Informer. The app is created for Android 2.2 and higher.