Can I add or delete Users without Creator panel

[Saddam]

I created more than 70 application for separate purpose. so If sometime I want to add one user it's take too much time for me. But if it is possible to  add/delete user by Appscript/Google Sheet/Automation or Other database, it is very good for me.

So, If someone have experience about it if tell me. I need your help as soon as you can.

Please help me.

[WillowMobileSys]

The question is..."Do you need your users to be white-listed?  In case its not clear what this means (and for others), white-listing means that you explicitly list the user who can use the app.  If they are not listed then they cannot access the app

If you need to white-list the users, then you have no choice but to physically add a user to each app they are to have access to.  This provides the highest level of security for these apps.

If you can relax that security and allow any authenticated user to access the apps, then you can build your own Users table, shared among ALL of the apps, to add and remove users.  While any authenticated user can gain access to the app, you would only allow users who have been added to the Users table to see any of the app features.  If any other authenticated users accessed the app and are NOT in the Users table, you would either show them a blank app - i.e. hide all the views - or show them some sort of instructional screen of how to get access to the app.  

This second option will require changes to each app to integrate the Users table and implement the hide/show logic mentioned.