Updating a free App requires paying if the update is not free?

I have a free App that I am about to update. After the update it will not be free anymore.

People who got my App while it was free - will开发者_运维知识库 they have to pay in order to get the new paid version?

Thanks.

No, only initial app installation can be paid - all updates are free. The possible option to introduce paying in your app is to use in-app purchase functionality.

As long as it's the same app (not published as a separate one) then I believe it will still be free. iTunes will still consider those people to own the app, so changing the price wouldn't affect them.