You can download the setup package of GİB 2.6.1 free of charge and have a look at users' reviews on Droid Informer. The app works fine on Android 4.4 and above. The download of this application doesn't contain viruses or any kind of malware. The tool is developed by Gelir İdaresi Başkanlığı and its category is Business.
GİB was downloaded and installed by over 0,5M users and the most recent stable update was on Oct 15, 2020. The app has the overall rating 4.4 on Google Play.