In a multi store setup will I get a separate URL for each store?

In a multi store setup will I get a separate URL for each store?

Each Tagrain subscription comes with a unique web address (URL) to login. A typical URL looks like <yourcompanyname>.tagrain.net.

Yes, you can have Single login for all stores. You can create roles and assign roles to users under Setup > User Management. A user can be configured to have access to all stores.