Apple users have the option to unlock all of the content with a 7-day free trial. This is a one-time only trial, so it is not possible to use the trial multiple times. Simply click on Subscribe and enter your payment information. If you do not cancel your trial in your iTunes profile before the end of the 7 days, you will be charged $59.99 for the yearly subscription.
Steps to cancel the free trial:
1. Go to Settings > [your name] > iTunes & App Store
2. Tap your Apple ID at the top of the screen, then tap View Apple ID.
3. Enter your Apple ID password or fingerprint ID when prompted
4. Tap Subscriptions
5. Tap the Subscription you want to cancel