$ bench new-app custom_app
INFO:bench.app:creating new app custom_app
App Title (default: Custom App):
App Description: Custom Frappe App
App Publisher: John Doe
App Email: custom@johndoe.com
App Icon (default 'octicon octicon-file-directory'):
App Color (default 'grey'):
App License (default 'MIT'):
'custom_app' created at /Users/johndoe/frappe-bench/apps/custom_app
INFO:bench.app:installing custom_app
INFO:bench.utils:./env/bin/pip install -q  -e ./apps/custom_app