Heroku toolbelt command requires app-name

You still need to include the command:

heroku logs --app app-name

You can also use -a instead of --app:

heroku logs -a app-name

Another option is to associate your (git) project to Heroku. From heroku open - no app specified:

$ cd app-dir
$ heroku git:remote -a app-name
$ heroku logs

Try this:

heroku git:remote -a [app_name]

This should allow you to call commands without having to specify which app you want them to be called on.

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