This app uses the command line to create a WiFi access point with this command:
create_ap wlan0 eth0 MyAccessPoint
and you can also make a WPA + WPA2 network with this command:
create_ap wlan0 eth0 MyAccessPoint MyPassPhrase
but to do this you are entering the password, and it is in the terminal in plain text.
It can of course be removed from history, or never added by prepending a space to the command, but it is still typed in and is listed untill you close that terminal.
My question is if this is less secure than setting up a WiFi network with a GUI app that doesn't store it in the same way.