It's secure to download the app. SCI APP 3.0 has been originally designed by SCI Sistemas Contábeis and it is included in the News & Magazines category. The tool was downloaded and installed by over 10K users and the most recent stable release was on Oct 18, 2020.
Google Play shows that this application is rated 4.7 by its users. You are able to get the installation package of SCI APP 3.0 3.1.2 free of charge and have a look at users' reviews on Droid Informer. The app works fine on Android 4.4 and higher.