In my app which is platform independent can I use Auto renewable to lock or unlock app feature . Is it possible that app may be rejected by Apple .
Lock and unlock app feature using Auto renewable purchase
Use of autorenewable subscriptions to lock and unlock features was not allowed up until, perhaps, very recently - see the new announcement about expanding autorenewables so they can be used for all app categories:
Introducing Expanded Subscriptions in iTunes Connect
It is unclear how this expansion will actually be implemented.