According to the antivirus report, the app doesn't contain viruses or any kind of malware. PEN.UP has been originally created by Samsung Electronics Co., Ltd. and it is listed among the Art & Design category. According to the latest info, this application is rated 3.8 on Google Play and can be legally used by people aged 14 and older.
The developer rolled out a new version of PEN.UP on April 27, 2017 and over 10M users downloaded and installed the app. Samsung and LG users download this application quite often. You are able to download the .apk installation package of PEN.UP 2.5.08 for free and have a look at users' reviews on Droid Informer. This file size doesn't exceed 20 MB and the app can be launched flawlessly on Android 4.4 and above.
Based on the users’ feedback, the main plus of the app is an amazing layout, though some people say that this application has such a disadvantage as animation bugs.