Cancellation

Cancel a free trial the same way as a paid subscription. There is an Apple article that explains how to cancel subscriptions. Click on the following link: If you want to cancel a subscription from Apple - Apple Support

I want to cancel my app before I charged

Manijehf wrote:

I want to cancel my app before I charged

Use the link already provided for a free trial that was started with an in-app purchase. If the app directed you to their website to start a free trial, then you will need to cancel on that site, as this method bypasses Apples payment processing that allows easy cancellation on the device.