Rounded UP icon pack is a free icon pack based on the flat, round icon style of the upcoming TouchWiz UI to be released with the S5. RoundUP icon pack requires a third-party launcher or Unicon to be used. If you're a beginner I would recommend you start with Nova Launcher, Also, a tutorial: Features: Over 800 default icons and 150+ alternatives (in the icon picker).
UPpack is the creator of the app that can be found in the Personalization category. Over 100K users installed Rounded UP and the latest update was launched on Feb 16, 2014. This application has been rated 3.7 on Google Play.
Samsung and Sony users recommend the app. A free .apk file of Rounded UP 1.0.0 can be downloaded from Droid Informer and you can check out users' reviews on this site. Prepare 6 MB of free space on your device for this app setup package and take into account that it works fine on Android 2.2 and higher. According to the antivirus report, the app doesn't contain viruses or any kind of malware.