We're sorry to see you go and we hope you decide to come back soon. All subscriptions are processed through iTunes so you'll want to go through iTunes to cancel your subscription. To do this first, go to the Settings app on your iPhone, scroll down to iTunes & App Store, and tap your Apple ID. Then select "View Apple ID" enter your password and scroll down to "Subscriptions." From there tap on "Manage" and turn off auto-renewal for the ASICS Studio app. Uninstalling the app will not cancel a subscription.
Check out this article from Apple's support site for more context on how to cancel a subscription. If you need more help with managing your subscription you can also go to this link on Apple's website to contact their support team.
If you're cancelling a free trial you'll keep the remainder of the free trial and be able to use ASICS Studio until the trial period has ended. You'll still receive promotional emails even if you've cancelled your subscription and uninstalled the app. To unsubscribe from emails all you have to do is click on the 'unsubscribe' button at the bottom of an email we've sent to you and you will be unsubscribed from emails.