This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . **Used open source libraries:** "Android Observable ScrollView" https://github.com/ksoichiro/Android-ObservableScrollView "Android Onboarder" https://github.com/chyrta/AndroidOnboarder "Glide" https://github.com/bumptech/glide "MAH Encryptor Lib" https://github.com/hummatli/MAHEncryptorLib "Material About Library" https://github.com/daniel-stoneuk/material-about-library "Material Design Icons" https://github.com/Templarian/MaterialDesign