是否可以让用户手动将铃声导入iOS中的应用程序？

I know that it is not possible to access the ringtones in iOS, but is it possible for the user to import a ringtone into my app for usage? I have read about iTunes file sharing, but I wouldn't want to do that. Is it possible to have the user manually search for their ringtone/audio file on their device and select it (like if I made a file explorer) and add it into my app? Another alternative, could I have it in one of my servers, like say the user uploads it to my server and then the app can have access to it to download and save it to the phone? I am running out of ideas lol. If this is not possible it just looks like I will be scraping this idea and making it an Android only app. I was hoping to make it for both iOS and Android. If it's not possible, what can I do. Any word from the wise?I know that it is not possible to access the ri