If you are looking for the original game in a dedicated app format, there is an official for the first Corruption of Champions . Because Apple doesn't allow "sideloading" easily, you will need a third-party tool like AltStore to install it.
If you manage to install a legacy app version, saves are usually stored within the app's local data. Why isn't there a "CoC 2" iPhone App? corruption of champions iphone
You must be online to play, and clearing your browser cache can sometimes delete your save files unless you manually export them. 2. Playing the Original via .IPA (Advanced) If you are looking for the original game