Custom Keyboard has eight tools within the keyboard it has:
Snippets with Snippets Folders ,Text, Photo and PDF files
Translation with ability to save the translated into Main App from the keyboard
full calculator
Clipboard Manager
Split Calculator
Time Zone Converter
Countdown Timer
Calendar & Calendar Events
So removing the Tab bar made the Custom Keyboard more breathable not Claustrophobic At all
the App Support iPad too and
it has 2 macOS App Main App and menubar App for easy accessible
