ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Google Authenticator - Google Authenticator is a multifactor app for mobile devices.
Ralpha Image Resizer - High-speed image batch conversion tool
andOTP - andOTP is a two-factor authentication App for Android 4.4+
Batch Image Resizer - Resize, crop, shrink, flip, exif-rotate, convert, enhance, process multiple pictures and photos with professional software! 120+ Actions, 30+ Image Formats
Microsoft Authenticator - One app to quickly and securely verify your identity online, for all of your accounts.