iphone - Remove feature in submitted App -

i have app on app store features a, b, c, d

i looking make features c , d paid using in-app purchasing in future until programmed/implemented; restrict or remove (visible) access features. note had setup c or d maintain access them.

is ok remove features in submitted application?

i try use applicaion's version purpose.

three steps follow:

1. detect app's first launch link first time app launch

2. and @ moment save version number link app's version number

3. once intend display feature

   nsstring *currentversion = @"1.2.0"; nsstring *versionatappdownload = @"1.1.5"; if ([currentversion compare:versionatappdownload options:nsnumericsearch] == nsordereddescending) {     //decide } 

this should added in next app version. once done, downloaded app should have saved current app version.

now update next bigger version i.e. 1.2.0, version 1 hides content users have not yet paid. users downloaded app @ previous version should able still see everything.

something should work, luck!