Currently with In app purchase the only way to cancel an auto-renewing subscription is to do the following with the device:
Settings > Store > View my account > Manage my subscription
Is it possible programmatically to link directly to the Manage my subscription page in the app store? I know I can open the app store via something like
NSURL *url = [NSURL URLWithString:@"itms-apps://itunes.apple.com"];
[[UIApplication sharedApplication] openURL:url];
I have seen other apps do this but I can't seem to figure out how.
The new and official way (according to WWDC 2018 Session 705) is the following url:
https://apps.apple.com/account/subscriptions