Why am I unable to access an app with a role that is given only write permissions?

[GauriSplunk]

I have created a role which has only write permissions and no read permissions for an app.
When I try to log in , it says:

the app is not available.

Does it need read permissions to access the app?

[renjith_nair]

When you give write access, Splunk automatically adds read permission(since read is the least access) unless you manually override that again. Role/user needs read access to list and access the app