1. Open iTunes.
2. From the menu bar at the top of your screen, choose Account > View My Account.
3. Sign in with your Apple ID, then click View Account.
4. Scroll to the Settings section and lick Manage to the right of Subscriptions.
5. Click Edit next to the Parallels Desktop Lite subscription.
6. Click Cancel Subscription. The subscription will stop at the end of the current billing cycle.