This is a plug-in for the free, touch-controlled synthesizer "Ethereal Dialpad". Access this plug-in using the dialpad selector screen in Ethereal Dialpad. NightSky uses your multitouch screen to control up to four synth lines with two fingers. Update: fullscreen, by request.
The security report indicates that the app is completely safe. Adam Smith is the developer of Dialpad which is listed among the Music & Audio category. The tool was downloaded and set up by over 100K users and its most recent stable release was on Jun 8, 2011.
Users rated this application 3.7 on Google Play. Samsung and Asus users download the app quite often. It's free to download the .apk file of Dialpad and you can read users' reviews on Droid Informer. This application installation package requires 14 KB of free space to work fine on Android 2.0 and above.