: Likely signifies the minimum system requirement or the SDK it was built for, in this case, iOS 9.3 .
: Features built-in viewers for PDFs, Microsoft Office documents, and various media formats. : Likely signifies the minimum system requirement or
According to the official listing on the Apple App Store, is designed for power users and IT professionals: in this case
: Indicates the app is compiled for 64-bit architecture (required for modern iOS devices). Microsoft Office documents
: These are internal tracking or obfuscation tags used by third-party archive sites (such as "Blue-Fi" or specific user groups) to categorize the upload.